Argentina species accounts, v1504

Myers, John P.
Unknown
Museum of Vertebrate Zoology, University of California, Berkeley
Original Source
Source Material:
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org

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Myers, J.P. 1973-74 Species Accounts Paraguay Argentina
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J.P. Myers 1974 Pluvialis dominica sightings Date # time behaviour location accompanying species afternoon → 18 September 200° 1900 roosting (22,15) up C. bairdi C. melanotus C. fuscicollis C. melanotus Tryngita subruficollis 19 September 100+ 0645 foraging (7,9) region Bonilby 3 0708 foraging 16,11 upland 1 0716 foraging 13,20 annayo 1 0725 flying 13,23 Tryngita 13 0728 foraging 13,24 39 0835 foraging (15,25) Tryngita 13 0845 foraging 13,26 65+ 0915 foraging 19,27 region Tryngita 52° 0920 foraging 21 22 0930 foraging 22,32 Oreopholus 3 1000 foraging 20,27 25 1115 foraging 1827 100+ 1120 foraging 17,22 region 100+ 1130 foraging 15,21 bairdi C. cephelotos Tryngita 27 1130 foraging 14,23 bairdi Oreopholus Tryngita 84 1145 foraging (10,11) Towerlanns 100+ 1700-1930 roosting, flying (19,9) Tryngita, melanota 20 September 100+ 1700 foraging, flying 8,10 region 8 1705 foraging (11,12) 2 1740 flying 14 14,11 200+ 1800-1820 flying seen from (14,13) Tryngita 22 September 4 1745 foraging (11,12) Tryngita 23 September 35+ 0750 11 (12,19) region Tryngita 35- 0800 11 12,19 Bonilby, Tryngita 15 0835 11 13,24 Bonilby
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J.P. Myers 1974 04 Pluvialis dominica sightings Date Time # behaviour location accompanying species 17 October (cont) 0805 8 flying 19,9 — 0830 1 forage 19,9 Tryngite 0940 3 " 19,10 — 0942 15 " 19,10 — 0950 1 " 19,10 — — 1 " 19,10 — — 1 " 19,10 — 18 October 0915-0946 120 " Grid 15 Tryngite 1115-1148 126 " Grid 15 Tryngite 1740-1930 327 " (8,11) [illegible] Tryngite 19 October 0637-0717 — Grid 15 " 0832-0907 — Grid 15 " 1028-1102 — Grid 15 " 1258-1326 — Grid 15 " 1438-1504 — Grid 15 " 1630-1702 — Grid 15 " gone from Estancia returned 3 November 0615 4 forage B,8 region — #2 1 1 1 1 1 0625 2 2 10,11 region 1
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{ "text": "J.P. Myers\n1974\n\nPluvialis dominica sightings\n\n07\n\ndate\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t [TRANSCRIPTION_TRUNCATED_DUE_TO_LOOP]
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J.P.Mayers 1974 Charadrius falklandicus sightings Date # time behavior location accompanying species 19 September for previous sightings see appendent 3 0715 foraging 12,20 fuscicollis 2 0730 foraging 14,25 bairdii fuscicollis 4 0840 landing (15,76) [illegible] 1 0848 foraging (17,28) - 22 September 4 0720 foraging (10,13) fuscicollis Zonibyx keaillii fuscicollis,Zonibyx 23 September 4 0650 " (10,13) fuscicollis Tringa f. 1 0735 " (11,15) - 1 0800 " (11,19) - 24 September 2 @ 1700 " 19,9 fuscicollis, melanoto, Tringa Tryngites, Pluvialis 26. September 1 1020 " (3,3) fuscicollis 29 September 2 @1630 " (10,13) fuscicollis 30 September 2 0745 " (10,13) fuscicollis 1 @1635 " 19,13 fuscicollis 2 0915 " 10,13 Tringa f., fuscicollis, bairdii 2 October 2 0920 " 10,15 Ch. callainis(2), fuscicollis 2 1030 " (11,18) fuscicollis 4 October 1 0711-0755 " linear grid fuscicollis 5 October 1 0728-0805 " linear grid fuscicollis 1 0910 " sudus linear fusc, bairdii, Pluvialis, Tringa f. see linear grid readings 3 November 2 0642-0710 " linear grid 3 0715-0830 " running down lin grid 4 0835 " (10,13) fuscicollis, bairdii 3 0840 " (8,12) fosci, Micro melanoto, bairdii 4 November 1 [illegible] 0734-0830 " see linear grid sample 6 November 2 0635-0700 " - 3 0830-0917 " see running down linear grid
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{ "text": "J.P. Myers\n1974\n\nCharadrius semipalmatus/collari.\n[illegible] sightings\n\nDate\t#\ttime\tbehavior\tlocation\taccompanying species\n28 August\t1\t0930\tforaging\t(2,3) La Oqucha\tVanellus C. bairsti Bombyx melanotis\n\t\t\t\t\tC. fuscicollis Ch. fallentius C. melanae\n19 September\t1\t0710\tforaging\t(11,15) Arroyo Chico\tC. fuscicollis, C. bairsti\n2 October\t1\t0920\t\"band does not extend around neck\"\t(11,15) Arroyo Chico\tC. fuscicollis, Char. fallentius\n5 October\t1\t0738\t\"band does not extend\"\tsub 3\tCh. fallentius\n3 November\t1\t0742-0710\tforage collins\tlineangrid\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t [TRANSCRIPTION_TRUNCATED_DUE_TO_LOOP]
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J.P.Myers 1974 Tringa harramatica sightings Date # time behaviour Grid location accompanying species 19 September 1 0655 flying 19,13 - murcius or spencut 4 1045 flying 25,30 - 22 September 8 1245 foraging (2,3) 23 September 3 0835 flying 13,24 - 26 September 3 0840 foraging (2,3) fuscicollis 16 1120 " (1,10) fuscicollis, Tringa f. m. 27 September 1 0718 " 4,12 - 28 September 6 0830 " 0,18 region Phuvialis, Tryngites 6 1620 " 0,18 region Phuvialis Tryngites {not in flock} 15 October 4 0830 flying " " Phuvialis Tryngites 18 October 5 1740-1930 flying (8,11) 19 October 2 1258-1326 forage Grid 15 Alv. Tryng. see linear grid and Grid 15 sample from GAT. 24 Oct -73 Nov 3 November 1 0647-0716 " linear grid see sample 7 0715-0830 " running lawn (grid) " 2 0835 " 10,13 1 0845 " 8,12 4 November 2 0734-0830 " see linear grid sample 6 November 5 0635-0700 " " " 7 0830-0917 " see running lawn linear grid sample 24 1800-1945 flying (8,11) see flocking account 8 November 3 0802 forage (4,12) Tringa f. 21 0816 " (4,12) fuscicollis 2 0845 " (3,13) fuscicollis, (Micropalama 2 0903-0930 " see linear grid sample 5 0930-1000 " see running lawn sample
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J.P.Myrs 1974 Limosa haemastica sightings Date # time behavior location accompanying species 13 November 2 0901-0930 see linear grid sample 17 November 38 1800-1950 flying see flocking accent (8,11) Steganopus, Mica: fusciollis, Tringa? 18 November 62 1505 foraging, purning (18,30) 21 November 1 0839-0900 forage Grid 15 sample 2 0712 (1,15) Tringa f fusciollis 6 0718 forage (3,15) Tryngits 9 0723 " 3,15 2 0723 " " 1 0727 " (3,15) Tryngits baudin 28 November 135 1820-2010 see flocking accent (7,12) Pluvialis, Tryngits A. baudin 2 0650 forage 9,15 2 0650 " 4,15 "
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J.P. Wyeus 1971 01 Tringa flavipes Date # time behavior location accompanying species 19 September 1 0655 foraging 10,13 fuscicollis previous sightings: see sp. accent 1 1045 foraging 25,30 melanotos 6 1225 flying 15,11 — 6 1808 flying into T. t. tsaravamp (13,12) — 22 September 15 1245 foraging (2,3) fuscicollis, bairdii 3 1710 foraging, ? (8,12) fuscicollis 23 September 2 0650 " 10,13 fuscicollis, fallcklandicus 1 0735 " 11,15 fuscicollis, fallcklandicus 1 0750 " 11,19 — 1 0820 " 13,21 fuscicollis 24 September 4 1700 " 19,9 fuscicollis, synuqits, Pluvialis melanotos 26 September 5 1120 " (2,1,0) Tringa m., fuscicollis, Limosa 2 October 1 0910 " (8,14) fuscicollis, fuscicollis 1 0915 " (10,13) fallcklandicus bairdii 5 October 1 0910 " sub 5 linear fall, fus., bairdii, Pluvialis 8 October (22,17) see flocking accent 14 October 2 1740 foraging (22,16) inclaudatos 17 October 1 0745 " (13,2) — 1 0810 " 18,8 melanotos 4 1103 " (22,15) melanotos, Micropalaeurus 18 October 11 1740-1930 flying (8,11) su various linear grid sample gone from Columbia 24 Oct > 3 Nov 2 0642-0710 forage linear grid see sample 5 0715-0830 " running along linear grid — 1 0835 " 10,13 Limosa 1 0840 " 9,13 Tringa fuscicollis, bairdii, melanotos 1 0846 " 8,12 fuscicollis
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JPMYers 1974 02 Tringa flavipes sightings Date # Time behavior location accompanying species 4 November 4 0730-0830 forage see linear grid sample 6 November 2 0635-0700 " " " " 5 0830-0917 " see running down linear grid sample 8 November 1 0802 (4,12) Limosa h. 1 0820 (5,13) fuscicollis 3 0905-0930 see linear grid 8 0930-1000 see running down 18 November 2 1505 forage 18,30 Micro. Steganopus, fuscicollis, limosa, Tringa f. 1 1520 forage (21,14) melanoto 1' 1530 (22,15) melanoto, fuscicollis 17 November 3 1130 turbitand, foraging (17,28) fuscicollis 21 November 1 0712 forage (1,15) fuscicollis, limosa 28 November 6 1820-2010 roosting flights (3,12) see flock with accent I was not consistent in notation
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JPMyers 1974 began 19 Sept. Tringa melanoleuca sightings Date t time behavior location accompanying species 20 September 2 1725 driving (15,11) - 22 September 1 1910 foraging (8,12) fusciollis 26 September 5 1130 foraging (1,0) Tringa f., fusciollis 30 September 2 0755 1,15 fusciollis 1 0815 (11,18) fusciollis, Microplema 5 October 2 0728-0805 leucar grid fusci, bairdi, 8 November 1 0907-0930 de leucar grid sample ↑ (was not not constant in latitude) 1 0930-1000 ac running down 18 November 1 1505 forage 18,30 Micca. fusciollis, Steganopus Tringa f. Linnaea 3 1510 forage 18,30 fusciollis, Steganopus
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J.P. Myers 1974 01 Arenaria interpres sighting Date # time behavior location accompanying species begun 19 Sept. 3 November 1 0642-0710 forage linear grid see sample 1 0835 " 10,13 fasciollis faindi, ch. falckbadius 4 November 1 1650-1720 " flipping our cowslit (10,13) fascicollis 18 November 2 1145-1215 " linear sub 4 28 November 1 1820-2010 roost flight (7,12) ca flicking accent fasciollis, faindi
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JPMYERS 1974 Calidris baikutii sightings Date H time behavior location accompanying species begin → 19 September 12 0650 flying in 8,13 fusciollis for previous sightings see 1 0658 foraging 11,15 fusciollis, Chaandris collata ap. accent 1 0708 foraging 11,16 fusciollis fusciollis Falklandicus 1 juv 0730 foraging 14,25 16 1130 foraging 14,23 Pluvialis Ornophalus Tryngite 22 September 3 1250 foraging (2,3) fusciollis, Tringa f. 2 1710 foraging (8,12) armyo fusciollis, Tringa f. 2 1715 foraging 9,14 " [illegible] 1 1732 " 11,15 " fusciollis 1 1735 " 11,16 " fusc. fusciollis 23 September 1 0909 " 9,14 armyo fusciollis 2 0733 " 11,15 armyo fusciollis 6 0750 " 12,13 upland Tryngita, pluviala 3 0801 " 11,19 armyo — 3 0804 " 12,19 up Pluvialis Tryngita 5 0835 " 13,24 up Pluv. Tryngita, Eunibyx 30+ [illegible] " 11,19 Pluv., tryng. <10 830 " 2,3 fusciollis, melanaeta 27 September 12 1015 " 6,13 Pluvialis 29 September 2 0745 [illegible]' 10,13 Falklandicus, fusciollis 12 0820 " (11,18) fusciollis Micropalma 27 0825 " (11,19) up Tryngita, Pluvialis 15 0827 " 11,19 " " 2 October 5 0900 " (6,13) fusciollis 1 0915 " (10,13) fusciollis, Tringa f., Falklandicus 30 1040 " , rutting, preening (13,19) 5 1042 foraging (3,19) Pluvialis, Tryngita
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JPMayus 1974 Catdris barbidi sightings Date # time behavior location accompanying species 23 October 11 0711-0755 foraging linear grid Pluvialis, fuscicollis 5 October 16 0728-0805 " " 7 0825 " 13,24 Pluvialis, Tryngita 10 0830 " (13,23) Pluvialis, Tryngita 2 0845 " (12,17) Pluvialis melanotus, Tryngita 3 0900 " (11,18) Pluvialis, Tryngita 20 0905 " (11,18) Pluvialis 18 0907 " bathing (11,18) Pluv, fuscii, Ch.f. Tringa 7 October 12 1730-1925 Roosting 22,12 Pluv, fuscii, melanotus, Tringa f. prina 13 October 6 1445 " 6,8 Tryngita, Pluvialis 14 October 1 0637-0717 foraging (mid 15 " 5 0832-0907 " " 7 1028 - 1102 " " 4 1438 - 1504 " " 3 1630-1702 " " see van der Zijd, cap. 15 and from estancia 24 Oct-> 3 0629-0710 " linear grid 3 Nov. 3 November 18 0715-0830 " running along lingrid 5 0835 " 10,15 Ch.felk, C. fuscicollis 2 0836 " (8,9,14) fuscii, melanotus, Steganopus 2 0837 " (8,14) Calidris melanotos 28 0840 " 9,13 melanotus, fuscicollis, Tryngaf. Tryngata 2 0842 " (8,13) Pluvialis 3 0842 " 8,12 Micro, fuscii, mel, fulikantius 1 0845 " (8,12) 3 0846 " 8,12 1 0848 " 8,11
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J.P. Myers 1971 02 Calidris fuscicollis sightings Date # time behavior location accompanying species 23 September (cont'd) 24 September 23 0835 foraging 13,24 - 2 1700 " 19,9 Tringa melanotos falklandicus Pluvialis, Fringilla 2 1910 " 11 " 20 1745 flying W/E 13,4 - 26 September 50+ 0845 foraging (2,3) bairdii, melanotos 44 0920 foraging (3,4) - 24 1040 foraging (1,0) Tringa 26 September 2 1630 foraging (17,2) melanotos 16 1800- 1900 counted flying into roost (19,9) melanotos, Pluvialis Fringilla 29 September 7 1630 foraging (10,13) falklandicus -30 1800-1900 flying (13,14) - 5 2015 roosting (19,11) - 30 September 6 0745 foraging (10,13) falklandicus bairdii 10 0755 " (11,15) Tringa m 18 0815 " (11,16) - 6 0840 " 13,20 - 5 0850 " (13,22) - 7 0925 " (13,23) on 9 - 17 0940 " (13,23) on km - 39 0945 foraging (13,24) - 7 1635 " 13,24 Falklandicus, Pluvialis 2 October 15 0900 " (6,13) bairdii 8 0910 " (8,14) Tringa f. Steganopus 3 0915 " (10,13) Tringa f. bairdii, falklandicus 2 0920 " on para territorial sub 1 (10,15) falklandicus 10 0925 " (11,16) (2-3) Steganopus, Micropalama 1 1015 flying (4,16) -
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J P Viggers 1974 03 Cafidris fuscicollis sightings Date # Time Behavior Location Accompanying species 20 October cont'd 11 1030 foraging (11,17) (sub 4) —> falklandicus 1 1040 (11,19) (6-7) —> 2 1050 territorial ? (13,21) 5 1115 TERRITORIAL (13,22) falklandicus, melanoto Pluvialis bairdii 4 October 25 0711-0755 10 linear grid falk, Pluv, mel. bandi, Tringa, mel. 5 October 32 0728-0805 linear grid falk, Pluv, bairdii Tringa f. 5 0940 forage sub 5 linear 7 October 15 1830-1915 roosting (23,16) Pluvialis, melanoto bairdii, Pluvialis, melanoto Micropelema, Tringa f. 8 October 188 1730-1925 roosting (22,17) 19 October 9 0757-0823 linear grid 23 0830-0840 returning dawn L.grid 20 November 15 0742 - 0820 linear grid 23 October 17 0705-0740 linear grid 3 November 31 0629-0710 linear 110 0715-0830 running dawn linear grid 10 0835 forage 10,13 bairdii, Ch. falk 3 0836 " 9,14 bairdii, melanoto Steganopus 7 0840 " 9,13 bairdii, melanoto Tryngta, Tringa f. 7 0842 " 8,12 bairdii, mel., Micro, falklandicus 1 0846 " (8,12) Tringa f. 4 November 45 0726-0830 " su linear grid sample 110 inc. juvenile 1210 ", turn, jule. sub 1 linear bairdii's Micro Chf. Tringa 35 0930 forage, territorial 1525 6 November 42 0635-0700 " " see linear grid sample 85 0830-0917 " " see running dawn linear grid sample 11 1800-1945 flying see flock accent 8 November 1 0805 forage (4,11) [illegible] melanoto
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JPillips 1974 Caldis melanotos sightings Date # time behaviour location accompanying species 3 November cont'd 3 0710-0830 running down linear grid sea sample 1 0836 foraging 9,14 Streptoporus, bairdii, fuscicollis 2 0837 " 9,14 bairdii 2 0840 " 9,13 bairdii, fuscicollis, Tringa f., Tringa t. Chalk 2 0842 " 8,12 bairdii, fuscicollis, Micropterus 8 November 2 0802 " (4,12) fuscicollis 1 0905-0930 sea linear grid sample 1 0930-1000 see running down linear grid 18 November 2 1520 foraging (2,14) Tringa f. 4 1525 " , ten. (2,14) Tringa, fuscicollis 10 1530 " -ten. (22,15) Tringa, fuscicollis, [illegible] 1 1720 foray (23,15) fuscicollis 29 1845 foraging - flock (23,15) fuscicollis 21 November 1 0930 foraging 4,15 bairdii, Tringa t. 28 November 9 1820-2010 roost flights 7,12 sea flocking accent
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JPMiyas 1974 Tryngites subroficollis Date # time behavior location accompanying species 19 October (contd) 82. 1438-1504 forage Grid 15 Pluvialis, bairdi 51 1630-1702 forage Grid 15 " " See grid 17 data for Oct 21-22 - date and grid 15 for Oct 23 from Ednaia Hill 3 November 1 0635 forage 10,11 region - 1 1- " (molting primaries) " 1 "- " 11,12- 6 0628 " " 2 0715-0830 bathing running linear See sample 0840 " 9,13 Arroyo Tryngites, mel, frui, baird 0855 " 3 0855 forage 9,13 upland Pluvialis 2 0920 forage 11,17 Pluv 2 0921 " 11,17 1 0925 " 11,18 1 0925 molting inner primaries 11,18 3 1 0926 molting mim. 12,19 7 0930 12,19 1 13,19 2 (1320) 1 2 1 0940 forage 13,21 Pluv 3 2 1 2
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S.P. Myers 1973/1974 Baird 162 Km W of Comodoro Rivadavia by road, Quin de Chubut, Argentina 7 November cont'd I had the impression that the territory was being expanded as we watched. Bird I chased other birds farther farther down toward the main group. The behavior of the other birds—especially the inconsistent one—also suggested flex. shallow - 1-2" The puddle itself was in gravel, but looked like it was created by road crews. However, there was some vegetation, largely consisting of scattered coated reeds (6" high) most concentrated in Base Bird I's territory and when the other bairds were foraging. All of the birds were foraging feeding by pecking at insects on the surface of the water. Very infrequently did any go beneath. (Bird A few of them, including #1, foraged along the edge of the water as well. Tower Llanos, Estancia Wetland, 35 Km S. of Juancho by road, Ptdo de Maeturiaga, Pcia de Buenos Aires, Argentina 7 December on E end of llanos in flooded field w/lois, M. Rumboll, + C. Leagly spotted n10+ Bairds foraging + preening with flock of WR + Peckorolo 18 January 0930 spotted 1 Baird from tower working up beach + over cow pies in Arrayo. None others visible along whole stretch. Chased off WR territory by WR several times (+ by different WR's). Difference between WR+ B is striking when they are together. 20 January one Baird spotted by tower in Arrayo, 0714. Foraging beside WR+ buffy chased by buffy (but not WR)!! 1 km W of Argentina by road, Pcia de Santiago del Estero, Argentina 11 August 10 flock of Bairds spotted 1100 in a sandy pond chying by the side of the road. Sally encrustations on dried sand and surrounding vegetation indicate that the water is saline. No vegetation in water or near areas where the bairds are foraging, just bare, flat sand. Collected 2 (139, 140). 5 Km E of Argentina by road, Pcia de Santiago del Estero, Argentina. 1140 - 7 more bairds foraging in sandy pond very similar to that above. No other peeps present, although... Ch. collaris, Vanellus chilensis, and Himantopus h. were.
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JPMayers 1924 Calidris bairdii 40 Km NW of Victoria by road, Pcia de Entre Rios, Argentina 13 August small groups of Baird's flyway along river-swamp system here this morning. Very sporadically, largest group was 5 individuals. One Baird's seen in flock of 25+ Rectorials. They were foraging in a small puddle about 30' from the main water line, with one Tringa flavipes. Flaw calling. See canopy list Estancia Medaland, 35 km S of Juancho by road, Pcia de Bs Aires, Argentina 23 August bairdii on Medaland!! in the Arroyo found first: a pair foraging along subunit 10, then another group of w10. Many small groups along the Arroyo between subunit 10 and the Rte 11 bridge. A few WR mixed in. I believe that I can discern several juveniles by white edges on interscapulars Also found 2 groups (3 and 5, respectively) foraging in upland habitat near Zorihya - almost like little Bufflors. Not only in their flocking call (br-r-r-with rolled tongue) unlike the WR jerk, but their intra-flock noises while foraging are also strikingly different. They all appear to be derivations of the BRM call. Some aggression (nothing obviously space-specific). Total of 76 (perhaps 100?) They were much more numerous than WR's. very skittish. Collected one. (43) Mouth of Canal 7 into laguna Mar Chiquita, 21 Km N of Mar Chiquita by road, Pcia de Bs Aires, Argentina 24 August a few Baird's foraging in a flock of WR + Micropalama along the edge of the humid flat (see map p.66 journal 24 April 1974). Very few calling. Estancia Medaland, 35 Km S of Juancho by road, Pcia de Bs Aires, Argentina 26 August 9 foraging in upland short grass (see journal). all sand-pecking with some bills being thrust into the substrate, but not deeply. Arthur considers vicariously chased a bird's. 31 August 1030 - I stopped to watch one of several solitary Baird's that I have seen this morning along the Arroyo. This was along old subunit 3 of the linear grid (i.e. UTM coordinate system). It is there with a solitary fall landica, both foraging on the W side of the Arroyo. Aside while watching: recall Jorge Rodriguez Mata's suggestion for field ID of Baird's vs fuscicollis - that in f. the spotting is longer + continuous along to the side of the belly beneath the wing, whereas b. does not. I notice here that bairdii has an inverted light V formed between the leading edge of the wing (while on the ground) and the breast buffy
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J P Myers 1974 Calidris bairdii Estancia Medaland, 35 km S. of Juanildo by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 31 August (coritd) [illegible] oh well buffy zone inverted V in baird's. lighter than surrounding area an extension of the white belly + lower breast In WR this [illegible] lighter area, usually white-white grey, is absent or mottled with dark grey spots. Of course, the distinction is not perfect; baird's sometimes are almost filled in, and sometimes the WR pattern is reduced to a few spots. This time of year the difference in winter plumage - WR a dull uniform grey in contrast to the baird's scalloped buffy back + definite buffy fringe to the breast also helps. Very few birds are not immediately identifiable using these features.] 5 minutes after I began watching a flock of 3 fall landiuns and 2 bairdii flew in. [I thought the fall landiuns already present gave cheer to its conspecifics (albeit inconsistently) the baird's showed no reaction. Within 3 minutes, the 'new' bairdii was within 5 m of the 'old' one, and it then passed at less than 6" from the original bird. At that pt. a 3rd bairdii landed where the 2nd had again eliciting no response. Eventually the 2nd bairdii continued on, while the 3rd came up to the 1st and began feeding by it. They remained flat away till I left, in about 5 min. Thus this bairdii is not territorial here + now 1 September 18:00 at (15.26) along the Arroyo [illegible] 6 bairdii among 19 peeps; remainder WR. Some agapanthus apparent this morning. Twice within last 10 minutes I have seen a baird's bumped by a WR. The White-collared Plover seems to be WR or accent. Baird's not talking very much in comparison to the infrequent WR chatter. More bairdii 30 m upstream. There appears to be some cohesion to their flocks - i.e., they stick together. 6 more bairdii together in the group 30 m upstream (no WR). Solitary baird's present along the lower stretch head of Río habitat (10,15), Arroyo Chico, Estancia Medaland, 35 km S. of Juanildo by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 5 September 6:30 possible tintinabul baird's at the curve. calling and chasing other bairdii in a not strictly PS basis. appears to be limiting its activities to the is just upstream from the tightest one on the curve
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JPMyers 1974 Calidris bairdi (10,13) Arroyo Chico, Estancia Medaland, 35 Km S. of Juanelo by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 5 September (Cont'd) There is an aggregative fascicella there with it. 1690 - no I must admit that it isn't territorial. behaviour, etc. suggest both in terms of space-limitation or foraging and the topography of the behaviour (has seen a helter-skelter-type supplant flight accompanied with cherr cell) but other behaviours aren't present and it is not constant in supplanting. 1740 - slightly albinistic bairdi at curve; two several large white patches on the wings. (13,22) Arroyo Chico, Estancia Medaland, 35 Km S. of Juanelo by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina. 0925 Several bairdi feeding in the water flew into the short-grass uplands and resumed feeding. i.e. there appears to be interchange between the two groups of bairdi. 15 bairdi feeding here on mound outside of Arroyo (see diagram in journal 5 Sept.) (15,27) Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina 0951: (See grid data book, journal, we sppacent). Baird's flew into feeding (clos 6 3 WR. at 0951 another baird's flew in, chased as began to land, but the original one flew up, called, and the "intruder" flown off. The first bird flew 15 m upstream but did not go with the "intruder". I put intruder in quota (because I don't know if the chaser is territorial, or even if it actually chased the other bird off). (15,27) (5,13) Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 0825 (5,13) Small flock of mixed peeps, including the albinistic bairdi first seen 5 Sept. 6 bairdi and 16 WR. downstream were smaller groups of n10 bairdi and 2 WR. 10 mow bairdi slightly upstream between subunit 1 and # of the linear grid (n 2100 m of Arroyo). I found several small groups of peeps. They were composed as follows: bairds WR total locations 6 1 7 (13,14) 4 4 (13,15) 8 1 9 (11,16) 5 5 (11,19) 3 3 (11,20) 4 20 24 (12,20) 30 22 52
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JPMyers 1984 Calidris bairdii 07 (5,13) to (15,27), Arroyo Chico, Estancia Medaland, 35 Km S. of Juanleco by road, Ptdo de Madariaga, Provin de Bs. Aires, Argentina 11 September (cont.) what was striking about this information was the degree to which these small foraging groups were preponderantly one species or the other. Also, bairdii appears to move about in smaller groups; indeed, as have noted before, individual bairdii can be found now. (15,21), Estancia Medaland, 35 Km S. of Juanleco by road, Ptdo de Madariaga, Provin de Bs. Aires, Arg. 14 September see journal - huge flock of upland shelducks including 100+ bairdii. 1755-17 baird's flew in, also some flying over. The flock coming in glided much more than usual, calling and they looked highly excitable, a large circle without flapping their wings. See journal (10,13), Arroyo Chico, Estancia Medaland, 35 Km S. of Juanleco by road, Ptdo de Madariaga, Provin de Bs. Aires, Arg. 15 September. 1845 stopped at the curve below Towner in Arroyo Chico (see journal). ~30 pce total present, ~5 are fasciollas, the rest bairdii. As we drove in the flock split into two groups, one of 13, the other 18. (also 2 falklandius pcead). The larger group still feeding, dispersed. The other began feeding and formed a very tight group (after ~5 min) until all were within a 1-m radius circle (3 cwr present). Much confusion - they were running in/out of 'circle' and everywelve within it. Then they all looked up (characteristically holding bill slightly downward toward tip, raised neck). remained in that pose >=20 sec. Then they flew. A bairdii flew over ~the same time, calling madly; the other group now for 17 members. [illegible] bairdii, SW. 684 slight rain began. 1822 - WR chatter. then a few moments later a WR, from 1+ away, ran full steam into a bairdii, bouncing off its chest. checked the baird's almost fell over. we came to 'investigate'. 1826 a few took to flight - went across Arroyo + then returned. 'Dont' by a pair of baird's - they are foraging ~2 m from the rest of the group, in back, one is feeding in deeper water (bill disappears to culmen) then they are 10 cm apart, maintaining that distance - one is mincing around as the other feints at it frequently. Both are facing into the wind (SSE) whereas in the main body of the flock this is not maintained as consistently. In the pair the maintenance of the orientation means that usually all the 'feinter' sees is the cloaca of the 'miner'. Now the 'miner' is leaving (1823). Distances in the flock seem to be consistent, the crucial
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J.P. Myers 1974 08 Calidris bairdi (10,13) Arroyo Chico, Estancia Medeland, 35 Km S. of Juanneko by road, Ptd de Madariaga, Pcia de Bs. Aires, Arg. Feature equally important to distance (i.e. interacting with) appears to be orientation—gather parallel except parallels. "Don't show your face to your neighbor." several times in the last 2 minutes I observed them feeding very close together sans/aggression—parallel. Then as one turns to the side (toward another) the one which is turned towards all react. Foraging style: puffing bill in till calmen reaches water surface, pull up until tip is out. "I see in each phase. up-down... we running after another. then the one that went ahead went and [illegible] skirled around a bairdi's: [sketch] it described a 6" diameter half circle around the feeding bairdi. The parallel business is not invariable, but fairly consistent. bairdis runs to a foraging spot and then turns so as to orient parallel to neighbors, not necessarily upwind (but usually so). @1834 - all looking up. (3 fallerlandiis flew in) 1838 block moved 20m upstream, split/lay into 3 groups on 3 corners of a triangle [sketch] 6 are bathing in group one, 4 settled into lymcinio in mad air 2nd group, 8 in 3rd (6 feeding, 1 preening). 1843 Group (and 3 very alert. I can't see group 2. not much stretched; they're just sitting, turning their head from side to side. 1845 They took off, heading directly forward Tower Llanos Swamp. I couldn't follow them for very far because they flew only a meter or so off the ground + the light level 25-3 foot candles. (9,18) region, Estancia Medeland, Ptd de Madariaga, Pcia de Bs. Aires, Argentina solitary bairdi's landed in (2,19) at 0719. foraging, (2,13) La Orqueta, 35 Km S. of Juanneko by road, Ptd de Madariaga, Recinto Bs. Aires, Arg. only 3 bairdiis at La Orqueta. see journal
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JP Myers 1943 Calidris fuscicollis Boqueron Aug 30 6:45 got good look at 2 small sandpipers in mud of receding lagoon Calidridines w/ white rump. Very skittish. Staying near a group of G Yellowlegs. Flew when I approached to get a shot. 320 Km NW of Villa Hayes on lagoon 0.5 Km S of entrance to Juan Zalazar, Dept Boqueron, Paraguay Sept 4 0900 sitting at same location where I collected 2 buffies yesterday as a flock of 4 white-rumps flew over. They whirled around the lagoon on E+W side of driveway, + finally landed exactly where buffies had been. Mud runs wet and deep several feet back from the edge of the water. Water is shallow (2-3"). W Rumps staying within six inches of wading on both sides of it (i.e. some are on mud and others are up to 1/2 way to joint in water. Feeding in proks. I easily approached them and shot 2. Sept 5 0645 returned to same site w/ Lois. at no 45 a single WR appeared. W pond has shrunk considerably from its previous size. @120' long w/ water in a half circle shape with a radius of 75-200' very wet mud with no vegetation on the periphery. + the mud gets drier but gains no vegetation as you go away to the E. Finally it gets wetter, there is another remnant pond ~200' from the edge of the closer pond, and then the depression ends on the other side of the pond + quid begins. The WR is foraging along the edge of the mud in the water, but not coming out of water about as far as were the buffies seen earlier this morning (i.e. in relation to leg stretches). :: this bird is remaining right along the edge of the water. Hood is down with bill entering into water. Most motion are picks, but some probes with bill spray in @ 3/4 of length. Also multiple probes. Only WR moved off.
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J.P. Myers 1973 02 White rumped 320 Km NW of Villa Hayes on lagoon 0.5 Km Soy entrance to Juan Zalazar, Dept Boqueron, Paraguay Sept 5 contd right across 180' or so, and is following a semi-pelleted plower across wet mud (out of mud). Staying within 3' of plower, foraging in pecks (not probes). Walking in a slower fashion than plower - walks 4 or 5", stays a few seconds picking, and then goes to new place. This contrasts w/ classic feeding of plower. Back to description of pond - dry mud extends ~30' from edge of wet mud making this a very open area, especially as vegetation surrounding it is quite low. 0715 - pup still following plower. 2 more plowers showed up. The 4 birds flew around together as a flock when I went after them. Río Salado at Puente Romero ~27 Km SW of San Miguel del Monte, Partido del Monte, Pcia de Buenos Aires, Argentina Sept 15
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JPM Myers 1973 Calidris fuscicollis 500 m W of Farmhouse, Estancia Medeland, Helderberg, 35 km S of Juancho, Provincia de B.A., Argentina 5 December a flock of ~100 cWR along the NW side of a pond created recently (yesterday + last night) in the rain. The pond is open grass, with a few areas of damasquillo. Snacks are on the surface, being blown by the wind. There are at least 4 birds engaged in something like territorial behaviors: the 4 were spread out along a 15' stretch of pond, near the edge where the are small (6" diameter) islands of grass sticking above the water. Each bird appears to be a supplant intruder. I can predict accurately for one bird that I have been watching for x15 min when it will begin to behave aggressively toward a neighbor. It has exclusive use of the small area in which it is feeding. The supplanting behaviors appears to be of varying intensity. Most common is an upright posture with modularity extended well down, where the bird wedges on a easily recognizable "ach ach ach ach..." the bill is opened remarkably wide for the production of this sound. The bird flared its body did this behavior to both neigh- bors feeding nearby as they approached a slight (4") channel separating the territories, and to other cWR flying overhead. Not! to a Microspalax that went by. Secondly, the bird goes with a crowd, with the side of the bird linked to the head facing the intruder, the "A" indicated a toner with a very close neighbor in this way, and usually did it from the same spot, behind the tallest clump of grass on the main "island" (6") in his territory. The neighbor would crowd at the same time on occasion. There also seemed to be a more subtle display, involving the fluffing of back feathers, but I saw it very few times, and may be too influenced by Henniker's paper. I saw one instance of a flying cWR supplant, when at the last moment the attacker turned flight forward the attacker and stretched them out, like a flying Black-tailed Godwit. Three birds were incredibly tame, allowing me to approach within 15' before ceasing to feed. They over looked still, they would not let me within 10 ft of one. Grid I (Farmhouse Puddle) Estancia Medeland Provincia de B.A., Argentina 24 December a minimum of 3 territorial cWR on grid this morning, possibly more. I have not been watching them as carefully as previously, however. One flock appears
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JPMyers 1974 White-rump 35 Km S of Juancho by road, Grid 3, Estancia Medland, Ptdo de Madariaga, Pcia de Buenos Aires, Argentina 5 January Collected 2 WR (059, 063) from flock of mixed shorebirds in a quiet marsh of Grid 3 - a newly flooded depression with no mud, only thick, low emergent grass and decayingillo. No info on spacing system of birds other than that they were not solitary. Grid 1, Estancia Medland, Ptdo de Madariaga, Pcia de Buenos Aires, Argentina. 1930 Saw only one WR in the vicinity of Grid 1 - a banded(!) bird, just, only USF+WS band - I think the lighting was bad. But if it did have only the aluminium band that means that 82/52015 (banded 1 January) recovered. 7 January 1045 passed through grid 1 one way back from Grid 2. In same spot as last night was a banded WRump - but this one was RIGHT YELLOW banded 31 December. It is possible that last night's bird was R.Y. also. [illegible] Grid 2, Estancia Medland, Ptdo de Madariaga, Pcia de Buenos Aires, Argentina Collected one WR in a futile attempt to get a known territorial sectoral. The pest had flown, landed among a flock of WR. I fired at him but instead got (063). Rk II Pond at Farmhouse Rd, Estancia Medland, Ptdo de Madariaga, Pcia de Bs Aires, Argentina 10 January 0830 - been here an hour, sitting in car watching WR + T. in hope of collecting kinds of known behavior. Rain just stopped. Between 2+4 WR have been here continuously on a little spit of the pond adjacent to the road: [sketch: pond, mud, grass, road, X US, A, B, E] The WR ranged within the area noted as mud, [illegible] occasionally going up into the E. inset stretch of grass. One of the WR - maybe JW - I can see an out-of-place feather or bird with a white tip - is definitely territorial, excluding other WR from area A. Another definite territorial bird is in B. "A" chases birds from a distance of 5y to 10 m, on both sides of the pond, also a little into the road. The other's ("B") seems to have a smaller area, and I have seen it sneak into "A" while "A" is to the W. This happened when another bird came into [illegible] between B; "B" chased, I continued on into A. Although
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SP Myers 1979 White-rump 03 Rk 11 Pond at Farmhouse Rd, Estancia Meldland, 35 km S. of Juncal by road, Pteo. de Madariaga, Proia de Bs. Aires, Argentina 10 January cont'd "A" and "B" share a bumbung, and I have seen fly supplements ("B" by "A"), a varying number of WR appear to operate between "A" + "B". It is conceivable that the non-territorial birds has a territory on the pond by the car, and that we are penetrating it from returning (see Pet sp accent-this infor for one of Ham. 1645 collected "A" - adult ♀. "B" had disappeared, perhaps as a result of the excessive Pict interaction at the time (see sp accent). Grid 5, Arroyo Chico, Estancia Meldland, Pteo. de Madariaga, Proia de Bs. Aires, Argentina 15 January settling birds on arroyo. One WR in anago on mud at ~0300! Caught 7 WR - banded (colour+ USF+WS (82152017, 82152024-30) Nobody died. W 1 km W of Farmhouse on Farmhouse Rd, Estancia Meldland, Pteo. de Madariaga, Proia de Bs. Aires, Argentina Outlaws 1540 stopped at puddle by road (mud, formed by tractor excavation this western summer) to try + get territorial birds from flood of water spotted while passing by. ~110 birds than originally. A number of apparently territorial WR there. Fairly good airview so far (1610) only on one, although among the others BA catch typical behaviors associated with territoriality. Following one bird. Best evidence for territoriality: when body moves from this bird, the furthest east along the pond : it (A) has a neighbor (B) to the west, which intrudes frequently into A's feeding area - i.e. B wanders east + is frequently chased away by A. One case was particularly convincing that I am seeing territoriality rather than a personal space phenomenon: A wandered off to grassy area between pond + road, about 40' away from area which he has been defending. A began feeding, looking up very frequently. This was especially striking because when it was feeding it disappeared in the grass, but when it looked up its head popped up. B, after a few minutes of A's absence, began working E onto the area from which it had previously been excluded. I began to think that the system had broken down, that I was misinterpreting it or that A was just not territorial. But then all of a sudden A began working back, fast + directly, to his territory, + immediately chased B back W. At the end of the occupation in this area was something behavior by both birds: marks (like which I had had thought to be their border. Within the flood we are seeing a lot of crouching - this pair especially. When we drove up there had been a bird in the road which we speared, bird to the pond. Now due to this again, sitting in the middle of the road - in fact, squatting with feathers on the ground.
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SP Myers 1974 04 Black-headed White-rump Sandpaper 1 Km W of Farmhouse on Farmhouse Rd, Estancia Mckland, 35 km S of Junin by road, Ptoct Maduringa, Pucia de Buenos Aires, Argentina 15 January (confid) about 5 m from the car. Just flew! - I heard our camera flauge flop against the roof. Rufous backed Negrito on A's territory, + A is ignoring it. 1615 - strong NW wind, cloud cover 0%. Another bird just flew in (probably over road) - came in swooping over A's area, clicked from a rush without the other bird landing. Then the "new" bird flew up + landed at W end of A's area. [Another interlude: A flew 15 m to supplement], stayed for ~10 sec, + then flew across to the W side of the pond, where we had noted territorial behavior before, + chased by a bird that had been there off. Whether or not it is a refocusing veteran or what I don't know. - Perhaps as much as 50-60% of flock in territorial maybe more. - 1620 learned that A defends an Eastern boundary well; chased one coming from E at a spot about 15 m from the wind. The intruder then flew through, landed at W end, + was followed + chased. In addition, a bird that had been along the edge of the W end was supplanted at the same time. New Behaviour - bird being chased, particularly when the chased bird is a normal neighbor (territorial), + thus with a common boundary, runs with tail held high as bird (runs away) [This is into the wind!] High held tail may be initial way into crouch [illegible] all Upset! Birds flew, wheeled around, + have now come in again. What caused it I don't know. (an airplane perhaps). A bird landed on territorial area + began chasing immediately. The group is dispersed differently though, with most of them being down by A [last crosses the pond] instead of up at the W end of the pond. What dispersal pattern will they achieve? A bird in A's territory (now called A' because I can't be seen) made aggressive motion toward a Semipalmated Plover - ran over to SP when it began to land, but inside of supplementing ran a circle around it + began feeding again. Mistaken, 10? 1630 - A' chased bird from E at approx. p.m. pt. A used to chase. A' chasing again, same borders. Also went after solitary Microplatalon -> M finding up to belly in 160, but approaching shore. A runs towards it but quickly goes to deep in H2O, + retreats. Squawking as he went. 13 minutes since landing the original dispersal patterns appears to have been reached!
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JPMyers 1974 White rump Sandpiper 15 January Kim W of Farmhouse on Farmhouse Rd, Estancia Miedland, 35 Km S. of Juancho by road, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina Both of us had been struck by the clumped way the birds herd, the fact that they were near A, instead of most being farther W, spread out. Now that pattern is AGAINST. Recall Q - a bird went into Q's old area just after A began defending again. Then perhaps A is not the only bird to have a fairly stable territory, provided that A=A'; Q=Q'. I shot A (070; a juv 0?) at 1645 [illegible] [illegible] - 1651 - no new shooting of A (The flock did not leave!) There have been at least 5 flights! Number of birds have moved into A's area, + are squabbling. Particularly a troika. Still very confusing. Within the 15 mx 3 m area A defended are now 8 birds - 3 but are being very aggressive, perhaps 4. A new flock (~10 again) came into the area from the E - they are the ones that have moved into A's old area. (The flock may have walked in from E (I was fixing A for storage) & thus did not see them arrive.) Less than 10 min after removing A there are violent fights over whole area! It's now chaos because of the surrounding birds. If a bird intrudes (or approaches) the "owner" does not necessarily chase right away, but does frequently. It looks as if it may be a relative position question. But perhaps not. Confusing because the action of one opponent forces the attacked bird toward another, & the aggression continues. The probability of attack appears to depend upon the direction that the attacking bird is facing. However, around 1704 - 5/7 birds within area are thinning out - 2 of them staying consistently (each of us are following one) within area. Is it being structured? What happens once we have spent more time in the area? When the birds are feeding, they often continue feeding despite the close presence for approach of other birds - but then they "clean house" - clearing all the other birds away from their vicinity. This is what we are seeing now, with many birds within a small, defined area. This contradicts with A -> an intruder was expelled when it encroached, not dependent upon the activity of the supplanting bird. It may have to do with the amount of time available. To be used for any version [illegible] Two after 20: I have seen a case of mounting - but only out of the corner of my eye so that the status of co-engaged birds was unknown. Followed by a crouch - birds expand + crouch. It may be an
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JPMijers 1974 White-rump Sandpiper 1Km W. of Farmhouse on Farmhouse Rd, Estancia Medland, 35 Km S. of Juancho by road, Ptdo de Madariaga, Proin de Bs As, Argentina 15 January cont'd appears to behave rather than some out-of-racket sex. I must catch completely several times. 1730 - old territory of A cleaned out considerably, only 5 birds now, more evenly spaced within the area than before. 3 in the center pond, one on the west end (bear watching him, Z, for 20 min now - he is definitely traditional) and one on E. end, which appears to be ten, as well. I have seen numerous space- defined supplementation by Z. Z appears to be pushing his territory E. gradually - undertaking though that the supplementation by Z near border begin with a vocal + phsy. change - a crouched run with head down, lots of quacking (classic wr turn cell). But on the border he storms abruptly + goes into a brief cloud - facing the opposite wind. 181735 - pair of birds between W + Z, oddly quite difficult from others - feeding close together, moving along, do not appear to be aggressing whatsoever. But they may have just landed, or.... But they look very different in behavior. 1740 - Z has a drop of beach in form of U E defined as a territory. Z is following Y: separated from X but still close. Also appears to be feeding differently: much daintier - surface or near the surface pick. Accent shed head in 1/2 once (though in both A + Z, and others present now, that is the main style). Feeding on above. It is moving to W. Edward it, then it entered gauntlet of territorial birds W of Z. Stopped to peck + battle. 1745 feeding with B in a more "normal" fashion. 1750 I collected Z, (all marked [071, jun 07]), but missed X - despite the fact that the flock remained to give me a second shot. Tower Llanos, Estancia Medland, Ptdo de Madariaga, Proin de Bs As, Argentina 17 January chased cows away from tower at 0615. Within 15 minutes a mixed flock of WR + (truffi) moved into area where the cows had been, particularly in small drainage S of tower + on edge of Llanos on both sides. WR as well as truffi feeding from exurpies. ~10 WR including 2 banded birds: [illegible] x yellow 1. green banded 1 January Grid 9 - feeding in drainage + on Llanos Nof drainage; (yellow- banded 30 December Grid 1!) - in Arroyo. Dependence of WR on cows pies in the Llanos foraging area is striking? They are only in the areas where cows were last night, then flushed with cowdust if they come from pido
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{ "text": "JPMyers\n(1974)\n\nCalidris fuscicollis\n\nTower Llanos, Estancia Medland, 55 Km S. of Juancho by road, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina\n\n17 January\ncont'd\n\npic, foraging only by probing their bills into the shit. By 0910 have seen numerous instances of territoriality in WR, in the arroyo along the water, on the sandy (shifted) area between the HSO & the Llanos, on the mud of the drainage, & upon the Llanos themselves. 0915 - many fewer WR in drainage now + much, if not all, are territorial. Birds considerably more spread out than before. 0920 - (land) birds Left Yellow at far S end of Arroyo foraging along edge. 0925 - still a number of WR on Grid F (which I can't read because of crow damage). - the WR are using campsites exclusively when in upland area\n1 Km E of Farmhouse on Farmhouse Rd, Estancia Medland, Ptdo de Madariaga, Provincia de Bs. Aires,\nArgentina\n\n18 January\n1030\nbegan watching small (6-9) flock of WR foraging on puddle that I'd watched 11/17/79. Territoriality immediately suggested by interaction among group of 3 at E end, in vicinity of A from 11/15. Pond much dryer today, though. - A's old territory broken into 2 separate ponds, & much of it has dried + cracked. 3 birds: W on west end, M in middle, and E on east end. 1105. E-M border appears good. E M came out from E to area near W. W (tail) squeaking, M then began squeaking back. Since 1100 they've been walking along small stretch of dry almost dry mud, between 2 puddles (one to E, where M came from, one to west where W was). Now squatting both (crouching W is just about 1/2 to M, with M but leaning in such a way that the side away from M is higher. Front view\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [TRANSCRIPTION_TRUNCATED_DUE_TO_LOOP]
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J.P. Wypus 1974 08 Calidris fuscicollis 1 Km E of Farmhouse on Farmhouse Rd, Estancia Weddell, 35 Kms S. of Juanchoy road, Plato de Madariaga, Provincia de Buenos Aires, Argentina. 8 January cont'd armadillo (small - "mutila") came out from the surrounding grass + settled down in the mid on the edge of W's territory. All the birds settle from puddle (6) come to the area occupied by E, M + W. Wantried to squeak, 2 at the saw brick left but a bird (T.) remained until after the armadillo left. No feeding occurred while the arm. was there. However, immediately upon its departure, rate of squeaking went up, + the birds started aggressing. "I was chased by M toward E, which then chased it out. W, M + E assumed the same spatial relationship that had held previously (we were able to follow individuals) + within 10 minutes it was apparent that the same borders had been re-rouned. 1140 all these birds ceased feeding + began to preen. W started, followed by the other two in less than 30 sec. But preening was done in their respective territories. (collicle) M (072, 8? juv) and E (073, 9? juv) @W,E found Tower Llano, Estancia Weddell, Plato de Madariaga, Provincia de Bs. Aires, Argentina. 1858 - banded WR Right Yellow, left Green (banded 1 Jan, Grid 9) 1912-54 WR on beach by favour, roaching. None banded as far as I can see. just below edge of grass N 50m S of tower. Spotting banded birds impaired by roaching, as many are on their bellies. 1916 R.Y.,LG wrump back to dame cow pie he was in at 1858 (disappeared in between.) 1937- WR left 1937 - flock of WR left. 20 January many WR on beach when we arrived. 0600 Banded bird (Right Yellow) in drainage area. 0611 R Yellow (5- Left) on grass by tower. 0720 - 11 WR too foraging in drainage area. 23 January 1400 - picked up WR preening on Grid 10. by 1415 it was roosting - equalling in Huguenot in (2,2). Remained roosting until 1440, when I recorded it as preening. 1445 feeding, still in (3,2). The first foraging efforts were not in couples, but it quickly switched onto one that had been torn apart by gulls. WR is jollifying till to the base of Huacalenen, standing on
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JPMyers 1974 Calidris fuscicollis 09 Tower Llanos, Estancia Medeland, 35 km S. of Tucumano by road, Dtpto de Mendoza, Provincia de Bs.Aires, Argentina top of the corn pile and working around it. 23 January control 27 January See Journal - banded one WR after catching it on Grid 10 11 February found banded WR (R Yellow L Green - [illegible] banded 1 January Grid 9) in Arroyo Chico at N end of Tower Llanos. The bird has a territory on the section of the linear grid which extends through the fence. Bird is defending 20 m on both sides of Arroyo. See journal WR 12 February Attended surveyed the linear grid for WR between 1700 and 1738 - found 64 foraging birds in 3 km, then a flood of 59 birds just at the end of the grid; these latter birds were mostly resting + preening up off the water in the mud (attacking in depressions caused by cow tracks). 3 banded birds - R Yellow L Green (1 January Grid 9; seen yesterday) - territorial in same spot; R Red L Red (27 January Grid 10) - in linear grid subunit #2; R Yellow L [illegible] (1 January Grid 9) - linear grid subunit #3. 13 February Netting + banding WR at the swamp at the E end of the Tower Llanos. I estimate there to be over 200 cormorants, but that in a very rough estimate as I've seen the whole flock (or what is probably the whole flock) flying once only twice, the WR are not approachable. (Solar Sunset). Instead of coalescing completely into one area, they are spread spottily in small groups over a 200 m stretch of swamp. At this time there is much movement, with small groups wandering along the channels of the swamp, low through the openings (between tufts). Small groups continue to come in from away from the swamp - must that I have seen flying from the W. 2115 - went to unfurl nets after 2100 sunset; 2 WR already in nets. 2300 - total of 7 WR banded, one salvaged from net (082) 14 February 1830 above length of Arroyo Chico farm fence at S end of Tower Llanos to Fence at N end of linear gird - a winding distance of ~4 km. We counted WR en route: between the first fence + the end S end of the linear grid (~1 km) - 37 WR now banded. Along the linear grid (3 km) - 24 WR, one banded. [R Yellow L Green - this bird is still territorial in the same location, on both sides of the Arroyo on both sides. This is the 3rd time in 4 days he has been there (every time we've looked he has been for +1 days).] Birds were spottier today than 12 February + their movements - a result of the sparrows - probably caused a slightly higher count. We found no large roosting group as 12 Feb, but there were indications that such a group was forming as we left. 15 February counted WR along the Arroyo between the fence at the S end of Tower Llanos
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JPMyers 1979 Calidris fascicollis 35 Tower Llanos, Estancia Medland 35 km S. of Tandil by road Pto de Madariaga, Provincia de Bs As, Argentina and the N end of the linear grid between 1050 and 1145. 22 WR in 1st Km; 77 along linear grid (3 km). Remarkable correspondence to yesterday's count over the same area of 37 and 74 WR respectively. 2 banded birds: R. Red and R. Yellow L. Green. The former is back to the spot where we saw it was seen 12 February, although not in the afternoon. The second is [illegible] still defending its territory, first seen 11 February. During the day we passed by R. Yellow L. Green's territory several times, the last being at 1900 — the bird was on and defending at all times. 2 other WR are typically present, one on each side. R. Red L. Red was gone when we passed its haunt at 1910. However another banded bird (Rovory Lyellow) was in the immediate vicinity (W end of linear grid subunit #2). Linear Grid, Estancia Medland, Pto de Madariaga, Provincia de Buenos Aires, Argentina Banded birds at subunit 5 — see journal took upward 4 samples of linear grid today (see journal for totals). Also counted WR along whole WR stretch of Arrayo, finding 91 birds present, a total very similar to those from previous days. Banded birds spotted: R. Yellow L. Dr. Yellow (0900, subunit 6, 1; 2000, just past subunit 50); R. Yellow L. Yellow Green (1737, subunit 5, 16; 2015 on grid 12 (just past 5)); R. Yellow L. Yellow Red (1737 subunit 5, 09). R. Yellow L. Green for territory throughout day; see following data in Grid 4; Linear following data book) R. Orange L. Yellow (morning, subunit 2); R. Red L. Red (morning, between subunits 2 and 3); R. Yellow L. Yellow Orange (morning, grid 12); R. Yellow, L. Orange Yellow (beyond grid 12). A total of 7 birds. During the 1000-1700 reading of grid began noticing basking birds in flocks (not catching any on grid). By 2000 they were beginning to fly up. As noted above, I took following data on R. Yellow L. Green on its territory, just beyond subunit 1 when we placed stakes in order to be able to examine R.Y. Lg.'s territory. Staked 1942. There are 5 or 6 birds on each side of R.Y.Lg's territory, which stretches at least 60m along both sides of the Arrayo. During the 60 min period R.Y.Lg. flourished view (hidden by car) once, returning after 2 minutes. Obvious well maintained border with 21164, the WR to the N. 3 supplementation in 60 min great distance ±35 m. This data is in Grid 4 book. 17 February 1 sample from linear grid, 4 from Grid 12. See journal for totals. 3 banded birds: R.Y.L.g. (territory past subunit 5); Rr. L.r. (subunit 2,3); Ry.L.yg. (Grid 12, various units). The latter bird impressed me advising own territory. 4% of WR down in Grid 12 linear grid.
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JPMyers 1974 19 Catedrii funiculii Linear grid Estancia Medland, 35 km S of Juandro by road Pto de Madariaga, Provincia Buenos Aires, Argentina 20 February ran grid 0520, 1850. See Journal for totals. Resighted RyLyr, RyLyg and RgLg. 24th 21 February rigid Linear grid banded birds at submit 5 of linear grid from 0530-0800 w/ Pablo Caceres, PWR. Gyptian Potrero beyond Linear grid Potrero, Estancia Medland, Pto de Madariaga, Provincia Bs Aires, Argentina. resighted a WR (banded 2/13/74 in tower Nava swamp) RgL O, 0.4 km N of banding site in a small drying pond bordered by black mud, with flock of 5 other WR (see journal for map) Linear grid, Estancia Medland, Pto de Madariaga, Provincia Bs Aires, Argentina. recorded 42 WR on grid while running from 1955 to 2830. then took two samples of banded grid 12 at 2039 and 2049. It is very difficult if not impossible to read bands when the light comes as it does during these hours. Light at the last reading was 16 fc. at 2054 the Slap- wing on the grid 12 started calling, and all but 2 WR flying (2 Chen falc. remained also). 22 February Wind at Grid 12 0640. First bird WR heard at 0641 (they were not in through before this train) Timing is remarkably similar to that of previous days here in campo. (See journal Feb 20, Feb 16) 0911 after - 32 minutes on the grid, during which none of the WR did anything but feed, I am now seeing a few fighting - one WR on linear grid, one WR on grid 12, a Ch. fallax badius on grid 12. Also at the same time I saw the first clear aggressive supplication 0715-0717-0800 data lost because of erased tape. Lois began following data at 0750 (WR 2/22 A sec Linear grid, Grid 12 book, p 19) 0800 Lois watching to 2/22A - went into crouch, staying for 2 minutes 8-12 inches from a bird that had chased it from right (min 30 of following data), 2/22A came out of crouch + began feeding TAIL DOWN. White rump is plainly visible while the tail down. 0804 RyLyr, 2/22A again almost into grid 12, having worked its way up + down the lower reaches of linear grid subunit 5. It seems to be going back and forth. Now it is "running" another WR in front of it (but I'm not sure whether it is territorial or not) - the other bird moves ahead when RyLyr is within 1 m of it. 0809 - finally able to ID banded WR fly 1 side on opposite side of subunit 5 — RyLyr 0810 watching fight between 2/22A and a neighbor - the wramp - the white rump is displayed during the crouch - at least by one bird: wings were lowered off the back and held alongside the wing.
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JPMycro 1974 Calidris fuscicollis Grid 12, Arroyo Chico, Estancia Medeland, 35 km S. of Swancko by road, Pato de Uldaraga, Pavin de Buenos Aires, Argentina 22 February (cont'd) when other birds approached within 2 m while in his activity center. Sometimes, twitter- ing began as far as 3, 4, or 5 meters away. The distance depends upon whom he addressed - what they are doing. For example, other birds in the immediate vicinity are calling, and if two birds engaged in such a fashion approach Ryllyg, it almost invariably begins to flutter at a distance of 3-4 m. Ryllyg showed a few short instances of crouching, but nothing expensive. No tail raising. B receptacle - Although Ryllyg was not territorial, its activity had no fixed reference points, + the probability of attack appeared to depend principally upon the position with respect to those points. But attack appeared to be more dependent upon distance from Ryllyg. 10:35 we began following 2/22 B. After 45 min it flew with all (but 2) other birds on the grid upstream. In the observation area however 2/22 B appeared to be much more classically territorial than Ryllyg, defending an area of ~100 m² in a diagonal from (5,2) stake on the outside to (8,0). Supplemental flights involving flights of at least 20 m were seen. 2 definite foraging bouts, one by (5,1) + one ~10 m from (8,0) stake, the (5,1) was most criticized, with 2/22 B frequently flying to supplant. Crouching seen here. Intruders into the territory were regularly supplanted from any distance. When the flock flew at 11:20, we also could not discern any disturbance, yet the birds acted as if there was jet calling upon take-off, which was sudden + simultaneous, the flock flew downstream at least 150 m + landed. By 11:28 Ryllyg (which had been foraging just south of the grid) reappeared about 150 m W of the grid. The flock had been walking NNE south. Ryllyg also back to almost on grid. 11:30 Ryllyg in (3,2). 11:33 it appears that 2/22 B is back, re-supplanting again in same location where two before flight. 17:40 - We have left the grid and are at the territory of Ryllyg near Grid 4. It is not here, but instead 100 m upstream! (3300 N) 12:15 Ryllyg is back on territory. We returned to the Arroyo at 20:45. Ryllyg was on territory. Took 4 grid counts on Grid 12 from 21:00 to 21:15, as the crew left for the evening. At 21:00 their dispersion was strikingly different from anything else we had measured earlier during the day - 7 WR in one 5x5 unit! Though they were certainly more scattered than at other times, they still managed to
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JPMYos 1994 Calidris fuscicollis Arroyo Chico, Estancia Medland, 35 km S. of Tucumc by road, Pto. de Madariaga, Avia de Buenos Aires, Argentina 26 February in the Journal (29 February) linear grid sampling procedure does not entail searching between grids for banded birds. Out of these 5, two three were in the same grid unit as they had been previously. 2 had changed; one RyLyy from submit 9 to submit 10, 200 meters in 10 minutes. The other RyLpr, was lost in 7.20 min later (found) Between 8+7, a change of less than 100 m, then five minutes later it was between Grids 6 and 5, a change of over 400 meters. Of the birds that remained in position, one, RyLop, had not been sighted before. The other two had been seen in the position when I found them today (at 11:30) during previous survey. One, RyLoo unknown to territorial (22 February), the other (RyLir) was known to be territorial from 1/27. Although has not been seen it defending a territory when it was found today, I have been finding it either on submit 2 or between 2+3 (close to 2) frequently (BANDA series 2/11/74). However, it is not always visible there. Returning to those that moved, one RyLyy, which moved from 9-10 to 10 this morning, has been found today at 10:30, on 9. The other RyLpr was first found 4 days ago on Grid 10 (between 5 and 6). Since, it has been found once on submit 6. 27 February 08:50 'rainier' flight by WR in Arroyo - a lot of energy being used to get nowhere. 08:40- Banded WR in Arroyo, looks like RyLag? Ran Arroyo linear grid this morning as I returned searching for birds. Out of a total of 76 WR seen along 3km of Arroyo, 12 were banded. 2 resightings were new, from Grid 9 on 1 January! 28 February. running linear grid at 15:30, in submit #1. Found a typical late afternoon, man feeling flush of WR. It is the first estuarine mud flock that I have picked up in the linear grid sample proper. Not frequently have found them down the Arroyo ~100-150 m at the curve, when I have found 50+ birds. Often buffle are bathing, roting, or preening with the WR flock. When I have stayed to watch such flocks, they begin to disperse by late afternoon, many flying directly toward the roosting swamp. It is possible that they came from there as well, because at the total % of WR along the Arroyo is increased drastically, and because the % of banded birds (10%) is so low compared with that of the Arroyo Chico Swirl (~20%). Do they, like the buffle, come to drink? as the swamp water reflet? 17:30 After checking for banded birds along the linear grid (found 10), on reaching the curve in the Arroyo went to the curve below the tower when a mass of shorebirds had assembled. RyLpr nowhere. Had not seen it since banding 1/15 in the Arroyo on submit #1. A small flock of WR left within
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Calidris fuscicollis Arroyo Chico, Estancia Medeland, Pto. 35 Km S. of Trenque by road, Pto. de Madariaga, Provincia de Bs. Aires, Argentina 28 February (cont'd) 15 minute, flying off when a flock of buffle left from their communal roosting area, WR flew on to swamp. Since 17:50 I have seen small flocks of WR taking off for the roost periodically. 19:00 12 WR going from Arroyo to swamp. 19:10 another flock of 12, WC = 4000 ft in sun; 1000 ft in shade, 19:25 - 19: more. WR going toward roost. WC in sun = 3500, shade = 500. However, the curious thing about the process by which they leave is that birds arise from a 200 m (at least) stretch of arroyo, leaving + calling simultaneously (jerk) (i.e., birds lean at the same time), but other WR, between 4 or next to three departing again. Then at similar time they leave, also in flocks produced in circular fashion. 3 March 18:00 Ran linear grid. See Journal + linear grid data book. It's up dramatically (to 123 total along all of linear grid). 4 March. 5 March 07:35 - flock of 20 was flying up + down Arroyo by tower. What crash of energy, it would occur. (1) Spotted banded birds on run down linear grid. 14 of 88 WR seen landed. See reighting chart. Of particular interest: Rr-Lr, which first banded since 2/11/74, has been seen only after or subacute 2 or between 2 and 3, was found today feeding in a flock between 8 and 7. Also, Rr-Lor was seen twice: once at 08:30 in the flock with Rr-Lr, and then again at 10:30, 4 Km S. of Arroyo just near the bridge. 7 March 17:46 began linear grid count, finishing 08:17. 31 WR seen total on grid. I did not attempt to read bands, as I subsequently made a run down the Arroyo especially for that. Total of 94 WR, 13 banded, including one new one Rr-Lp. See reighting chart. Then undertook to subacute in order to follow Rr-Loo, a WR that has been on the subacute since the day of traveling (2/21/74) and certainly before I had previously noted (e.g., 22 February) that this bird was territorial. Today my observation was reaffirmed for a 60 minute following period (Linear Grid following data book, p.40). Rr-Loo behaved in an exquisitely territorial fashion, chasing off other WR whenever they intruded from as far as one end of the territory to another. Linear distance defended was on the order of 60 m. There was some confusion because its own feeding effort extended beyond the defended border into the territory of a neighbor to the N. Maximum flight in defense was 55 m. It did not chase birds off of both sides of the Arroyo. Defense flights appeared to stop at the border - 5 aggressive acts, and one retreat from neighbors territory upon being chased once recorded in 60 minutes. There appeared to be a difference in reachin to those WR flying by + continuing on, to those flying by + landing on the territory, often before
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SP Myers 1974 Calidris fuscicollis 7 March (cont.) Arraigo Chico, Estancia Wredeland, 35 km S of Torniho by road, Pto de Madariaga, Provincia Buenos Aires, Argentina the intruders or had landed, or it was not within seconds after they did. Is there some landing call? Mouth of Canal 7 into Mar Chiquita, 21 km N of Mar Chiquita by road, Pto de Mar Chiquita, Provincia Buenos Aires, Argentina 8 March Beceler found flock of 500 WR in mouth of canal foraging over broad (300 m x 200 m at least) shallow (≤2") mud flat. Most of the birds are very densely spaced, although near the periphery, along the shoreline, they appear to space out a bit. Not spooky (till I started shooting). Collected 10: [illegible] 94-105, 108. Almost all of the birds had a small reddish gumbus in their mouths & throats, the worms were less than 20 mm x 8 mm. I collected a small container full, as the throats of the dead WR were literally overflowing with the worms. All but one of the WR were pmm - with 5 of the 8 having definite, large bursa. The other 3 others were questionable - either lacking a bursa, or it being almost entirely involuted. I am not satisfied with my ability to detect the spiculum in the dorsal wall of the cloaca. One appeared to be a definite pad. The 8th was questionable. Interestingly, of these 3 that were questionable tended to have larger ovaries with ova that were beginning to differentiate. Arraigo Chico, Estancia Wredeland, Pto de Madariaga, Provincia Buenos Aires, Argentina 11 March 0745 Two small flocks of WR at curve in Arraigo below tower. One banded bird, Rplv. One sticky thing about these birds is the number that are bathing already! and it is just after dawn! Reading the linear grid and picked up an unusually large & compact flock for early morning hours on subunit 6 - the bulk of this flock, 12 birds, settled in 4 sub-units. There were no bards among them. However, total for the sample was typical - 29 birds. Then returning along the Arraigo between subunits 5 & 4, in fact at the N end of Rplv's old territory, I picked up another flock at 0930, this time of 32 birds. One of these was Rplv, already found this morning below subunit 7. Rplv had never been this high on the grid before, usually him found only at or below subunit 11. Miller had not formed such a large & compact flock. It would therefore appear that these birds are in some state of flux, be it a change in feeding area or some premigratory activity. The total WR found was unusually high - 139 birds, relatively normal except for the 200 bird flock of Rplv. 14 banded WR found. However
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JP Myers 1939 20 Paludis fuscicollis Arroyo Chico, Estancia Medelane, 35 Km S. of Juancho by road, Pdod Naderiaga, Provincia de Buenos Aires, Argentina 17 March (contd) Rclr was not found for the first time since 2/55. RyLrg appeared first in subunit 4 at 080?, then in subunit 1? at ~1000. 12 March again in early morning - 0805 - Rplr and flock are at the curve below the Arroyo. 18 WR with it, (including 7 roting birds at this hour?) 0840- finished grid count. Nothing unusual except for absence of WR from subunits 2 and 5. total of 33. Running down Arroyo dam emphasized by the amount of movement the WR are kinda taking, especially in 8-10 area. Bounds! 124 birds - and Rplr again shows up higher on the linear grid, little yesterday. This time it and its flock appear to be in 6-5 region. Bounds! again - 15 landed birds, a record. Rplr showed up between 7 and 6, and RyLrg, after not showing since 4 March, have returned to its old haunts. Only RyLyy of the regulars does not appear. This may have been due to high rate of movement in 8-10, where usually find it. After running down the Arroyo to subunit 15, we returned up to 7. there was a major change in bird distribution between since we passed on the way down. No feeding WR were found between subunits 1 and 6, subunits 6-7, when there were 2. In fact, slow mo landed WR between 3 and 6, when there were several small groups of roting birds, perched around on, and behind cow pie or horse shit. Even RyLoo, a known territorial bird, was not on 5, though it had been 20 minutes earlier. However, on 7 I found RyLop, a bird whose total following data from because its relative ranking over the past few weeks suggested territoriality, 1032 began, ended 1132. RyLop (page 4) of linear grid following data book) is territorial, as are neighbors on both side. RyLop's territory extends: however feeding was seen afar. So 18 and 19 O. On both of these occasions, however, RyLop was supplemented. (only two times which it was the attacked bird. All but 6 minutes sampled were spent within the territory. In the 1st 30 minutes RyLop supplanted 8 birds; attacks, even in flight, ended at border. Bird could feel just beyond 5, + despite RyLop proximity to 5 (less than 5m) it didn't attack However, But supplementary behavior involving flights of over 15 m were seen. I was struck by the existence of a buffer zone between RyLop's territory and that of the bird.
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J.P. Myers 1979 Calidris fuscicollis Arroyo Chico, Estancia Medellin 35 km S of Juancho by road, Ptd de Madariaga, Pcia de Buenos Aires, Argentina 12 March, (cont'd) the month, in which the latter, Ry Lop, and flocking birds foraged on occasion. The bird To the W defended from 1 or 0 on North, leaving at least 15 m @ unconflicted. Another item: Ry Lop follows a very consistent pattern, going clockwise from across from 5, to across from 12, E over the Arroyo (5 m) to 13, then back to 7, across over the arroyo down to 6, to 1145 - Ry Loo back on territory. 13 March grid count 0813-0846. 31 total (wrump) seen, with 20 on West side. The east/west ratio has been gradually slipping to the favor of W. 0832 border fight between 2 territorial (wr) in subunit 6 on the right hand end of Our West side. 0840 - 3 WR agreeing in subunit 8. 0904 Ry Loo again on territory above subunit 70, just W of the fence. 1010 began following Ry Loo on territory on subunit 5, where I had last followed this bird 3/7/74. See linear grid following in book #2. Except for a 4 min period Ry Loo was always on the W side of subunit 5. It disappeared for a 4 min period - whether visiting an unidentifiable point, or whether it left the grid I don't know, although I suspect the former. Ry Loo fed (in/out) almost the entire period, supporting only 7 tissues. I checked a border to the South W 5 m beyond the 200W stake. Northern border just south (<3m) of 100 ON side, the territory was ~1000 m long. No feeding on E side, nor any supplanting. But during the 60 minute sample period no WR foraged on the E side. Ry Loo's feeding activity was fairly clearly dispersed along the whole length of the territory, descent in 14,15,16 and 17 was. The only striking difference between today's behavior and that of 3/7 was the extension of the foraging effort on lar as OW, and the absence of E side foraging. Consequently, less aggressive interactions. The latter two may have been related. On 3/7 the only times Ry Loo ventured onto the E side were during or following aggressive interaction. 1645 back in Arroyo. Few sightings further below (see subunit 4, most of the birds being in groups) for resting. Although I have not commented on this to date, I have been noticing two very distinct feeding methods employed by WR in the Arroyo. One is a search - peck at index, involving a lot of movement. The term "search-peck" may be a misnomer, as perhaps it is peck-search, i.e. the pecks are an integral part of the search. When foraging - the WR runs a few paces, and pokes its bill gently with shelly-like the sand, once or several times. These probes would appear to be oriented towards discontinuities in the sand - frequently the bill is jutted into the base of mounds with heaps of mud etc. But I will also enter into smoother areas. Traces of this feeding style are quite obvious: the bird leaves not only its footprints - a meandering path - but also many bill prints. Often a 4-probe pattern is seen: : : : : the probes are shallow,
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JPMeyes 1934 Cahitris fuscicollis Ariyo Chico, Estancia Mardland, 35 km S of Juancho by road, Ptdo de Madinajzgo, Pcia. de Buenos Aires, Argentina 13 March contd certainly arranging less than 1 cm deep. Watching a WR engaged in this foraging behavior, I am impressed by the infrequency with which it actually swallows something. Occasionally, they come across a worm (of the type, it appears, that the fall landing throws off) — but usually any swallowing motions pass without much clear ado what the bird ate. This feeding style seems to be being directed by both vision and touch. Vision orient ed to some degree the horizontally plane. Tactile stimuli take over after that point, yielding or not yielding some bicho to devour. The second feeding style appears to be filter-feeding: the white rump remains stationary, still in the water + just into the mud beneath the surface. The bill is opened slightly, and not moved. I believe that there is some vertical motion, slight, + that perhaps the tongue is also moving in and out. Slowly, a WR feeding thus advances forward, never withdrawing its bill from the mud. I looked at one site from where I’d just scared a “filter-feeder.” 2 things: footprints are visible, as is some disturbance in the mud where the bill had been (but no probing holes remain). Second, after taking a small breakoff shovel full of the surface of the mud, I found that it was starting with a small crustacean (??? any invertebrate knowledge being so appalling as mine) with an acicular outer shell formed such that at first I thought that it was a tiny bivalve (until seeing the multiple swimming appendages that came out of the shell). The shell can be closed. A filter feeder might stay in the same position for 5-10 seconds without shifting its feet. 14 March [illegible] [illegible] [illegible] sampled linear grid beginning at 0815 this morning. This time, in addition to other variables taken, I noted whether the WR being (count) was “filter- feeding” or “search/pocket picking.” Results = 31 total WR, 18 search/picking, 2 filter-feeding, and 11 peering or coting. Remarkable the results are so one-sided. Yesterday afternoon I believe the % of filter feeders to have been higher. 0845: At subunit 10d noted that there were 3 territorial birds present (of 5 on subunit). They control the S end of the unit. 2 territorial birds on the E side share a boundary near #10 stake. 0930 came to subunit 6 when prevented from completing run down array due to inclement weather. After 1.5 hrs watch I am convinced that only the right Northern area of E + W side, [illegible] units 0-5 at most, are controlled by a territorial WR — effectively the territory of this bird is 1/2 of the subunit.
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JPMayers 1974 Calidris fuscicollis Arroyo Chico, Estancia Medland, 35 km S. of Tandil by road, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina 14 March could 1100 - collated (OR) from subunit 4 - a filler feeder, and non-territorial. Immediately weighed + injected with preserved alcohol, including down esophagus in order to preserve contents. Collected some of the mud upon which it was feeding. 1120 collated (WR) (114) from subunit 1 - a stand pisher. Returned to camp. This afternoon I have taken stomach contents + preserved in alcohol. Will examine when there is proper light. 16 March Linear grid sample down to 25 birds. No territorial relationships in subunits 1, 2, or 9. In 3, there may be, but I don't know. Picked up territory boundary on 4 on the W side, and in 8, on the west side in 1 (across from 13). Thus, knowing that in 5, 6, 7 and 10 there are territorial birds, I have yet to find out about 3. 1100 walked along Arroyo (1) from end of linear grid to Rk 11, ~5 km away (see journal). 3 banded birds: RyLgr, RyLro, RyLo. The second bird has a territory just on the N side of the fence beyond subunit 10. RyLgr was with a flock of 20 other WR about 300 m beyond this fence. RyLo was with 7 other WR in a flock at the drainage ditch by ~4.5 km W along the Arroyo. I found 54 WR along the entire route, ~40 in thin V pin of the end of the linear grid, and the rest in the vicinity of subunit 1 found RyLo. A few were scattered between, but most of them I picked up in flight. I should note that RyLo was last seen 2/23/74 in a drying pond ~4 km NE of the lower llano swamp. 1 km E of Farmhouse by road, Estancia Medland, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina RyLgr is foraging with a flock of 19 other WR in the swamp just to the S of the road. Arroyo Chico, Estancia Medland, Ptdo de Madariaga, Provincia de Bs.Aires, Argentina 20 March See journal. WR #’s in sample on linear grid down apparently. Only (6 banded birds) (4 territorial). 2 additional banded birds found in Arroyo above the linear grid, ~500 m to the N. At 1530 RyLao was between units 8 and 7 in a flock of WR filter feeding. This is the first time I have found this bird away from its territory on subunit 3. However, two other territorial birds, Polaoyo and RyLpr were on their territories. I found 2 banded birds 500 m W of the linear grid. WR activity is definitely increasing in that stretch of the Arroyo. The fact that there were only 2 banded birds N of the fence above the linear grid, and that these birds were within one flock, plus the fact that [illegible]
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SP Myers 1974 29 Calidris fuscicollis At Arroyo Chico, Estancia Medland, 35 km S. of Juancho by road, Pte de Madariaga, Pcia de Buenos Aires, Argentina 20 March (contd) the 2 flocks seen banded birds were notably less mixed than the birds in the banded flocks, suggest strongly that these are flocks new to the Arroyo. And when have the majority of banded birds gone? 21 March 0818 began linear grid. made second observation of banded birds early on subunits today. 0829-one in subunit 4 in usual location, on eroded on W side. 0832-Ryloo on territory in sub 5. 0835 a territorial WR in 18 of sub 6. 0837 Rylop about from territory area 3/5, was back + chasing birds off of subunit 4, lower right. 0848 on sub 10 one banded bird remains. Returning along Arroyo searching for banded birds found Rolyo between 10a-19-territorial, chasing off a very large stretch of beach. Rolyo, on sub 9, also territorial (above linear grid /10+). Ryloo was back on its territory. However, by 0930 Rylop, sighted earlier this morning, had left subunit 9 (after subunits 8 & 7), which for over 2 weeks was the foraging area of a large flock, including several banded birds, has now been occupied almost entirely by territorial WR. The birds along here are now very evenly spaced, with ~25 m between them. Watched one WR fly to land 3 separate places, only to be chased out each time. But there are still a few non-territory banded birds. Only 2 non-territorial banded birds, out of 8 banded birds, were found running down this morning. Neither of these (Rylop, Rylyop) used to be found regularly. At 10:30 they were together on sub 3-2. Before, although they have tended to appear on the same day, I didn't necessarily find them together. 1305-just finished linear grid sample. 8 WR! oh great misery! On no subunit were there more than 2 birds, and then only one side. Ryloo was picked up, but it was the only banded bird which I picked up. However, except for one sighting WR picked up in sub 1, the positional off bends were consistent with their being territorial. Moreover, there were no observations to corroborate this though, because no birds were intruding. Mouth of Canal 7, Lagoa Mar Chiguita, 21 km W of Mar Chiguita, Pte de Mar Chiguita, Pcia de Buenos Aires, Argentina gasp. 5000+ WR foraging along the N+W shore of Laguna Mar Chiguita, in less than 1.5 Km of black mudflat. No band (photo). See journal for a description of the area. The flock (or multiple flocks) is largely in a broad shallow mudflat ~750 m W of the mouth of Canal 7, feeding where the strong wind has decided location, pushed the water away (I think). A few hundred
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JPMyers 1974 Calidris fuscicollis Mouth of Canal 4 into Laguna Mar Chiquita, 21 Km Nof Mar Chiquita by road, Pto de Mar Chiquita, Pcia de Buenos Aires, Argentina 21 March (contd) used for any examination of geographic variation, as the population is probably composed of birds which spent time considerably further south. What an incredible sight. Arroyo Chico, Estancia Medland, 35 Km S. of Juncalao by road, Pto de Urdanaga, Pcia de Bs Aires, Argentina 22 March 12 WR total on 1645-1716 linear grid sample. RyLoo was on territory. Witnessed one timberd interation on subunit B, in 2 west across from B (border). WR along the grid are spaced out as if they are all territorial. Counted WR from Rk 11 (bridge) to fence between Potero's 19 chico + 23 (i.e. N end of linear grid). 94 total, including one very tight flock of 21 and another of 5, both in 19 chico. All other birds in 19 chico were exquisitely spaced. As within 19 chico I found 67 total WR, 24/64 or 38% circle flocking, leaving the remaining 64% as probable territorial. Notable. On the linear grid, between subunits 10 and 4, Rolo, RyLoy, RyLpr, and RyLoo were on their territory. The span between B and 4, which (as I remarked before) was at one time the haunt of a sizable flock, is now fairly evenly divided by territorial birds. "Running down" counts suggest 6-8 WR spaced along the 200 m stretch, probably not all territorial 23 March only 8 WR in morning sample of linear grid (0830). Continued W to area of RyLgr, 500 m N of the fence separating Potero 19 grands from 23. I watched RyLgr for 30 minutes, finding it to be twittering whereas before (3/15) it appeared to be foraging within a flock. Unfortunately, earlier, although I resighted it continuously between B+4, I did not establish its status (but had the impression it was flocking). On the 3/15 sighting it was in a flock of "20 WR which had previously not been using this stretch of the Arroyo (there had been no WR here). This suggests that, as I have been led to believe previously, that there is a succession of events as a flock moves into a new foraging area, involving a shift from flocking to territorial spacing. RyLgr was supplanted by a timberd neighbor 4 times while it foraged across a boundary. One of these supplantations ended when the supplanting bird ventured into RyLgr territory, or very near the border, which was followed by extremely erecting by both birds: [illegible] [illegible] [illegible] [illegible] The intimidation began when the other bird, 3/234, flew at RyLgr, landing 10m to their N, squeaking. RyLgr at this point began anching its feathers and tail, throwing its tail while feeding (not down completely? - a graded display?). Then 3/234
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JPVilliers 1974 Calidris fuscicollis Arroyo Chico, Estancia Miedeland, 35 Km S. of Juancho by road, Pte de Madariaga, Provincia de Buenos Aires, Argentina 23 March (cont'd) flew again, landing within 2' of Rylgr, + both birds entered a crouch. I could see Rylgr's white wings quite clearly from my vantage point, and lowered the wings off the tail (the tail was down as well). This posture position was held for 4 sec., after which 3/23 A jumped at Rylgr, which went deeper into the crouch. 3/23 distanced from its attack, re-entered into a crouch, but started pecking at the ground almost immediately, Rylgr then fled away (back to W). Rylgr left crouch when 3/23 A reached a point ~30m away. Rylgr fled with tail down for over a minute afterwards, as 3/23 A continued working W. 0945 - watching a group of 12 WR foraging along a stretch of the Arroyo S of Rylgr. The topography here is somewhat more complex, with 2 dead ends of the Arroyo forming an X. (See sketch). Both of these bends are territorial, with at most 5 non. Circled #3 on the grid show how the territories are placed with respect to the arms of the X. The non-territorial birds have tried to forage several times in the centre of the area, particularly when the ... are... When they enter this area, they are given no peace, with residents persistently chasing them off, frequently from one territory to another, so that there are 3 or 4 supplantations in succession. The non-territorial birds persist air-flying back into the central area, only to be chased incessantly. Intrusions have been solitary, but more often than not 2 or 3 birds go together. 1045 - after watching 4 non-territorial birds for 20 minutes as they worked up the Arroyo in an area just N of Rylgr I collected two of them (120,121). Punta Raze, 15 km N. of San Clemente del Tuyu by road, Pte de Gualan Valle, Provincia de Bs Aires, Argentina 28 March 1650 - first WR after tide began falling at 1555. A more within 2 minutes. All WR seen have come in from the E. 1659: the WR are approaching the tidal zone in small groups, nothing larger than a flock of 6 so far. They are also dispersed along the habitat. 1720 - a flock of 8 WR along a 10 m stretch of exposed mud flat. They are the only birds for 20-30 m. Shows the paucity of WR. 1752: numbers of WR is still not overwhelming, 2 hours after tide began going out. Perhaps 150 WR. 1755 - WR are flying between areas where other WR are foraging in flocks of 2-3 birds, never more than 5. Few that I noticed unharmed suggesting territoriality. However, there do appear to be a few. Rattleback in Channel (see journal) when the branch so steep. [illegible]
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J.P. Myers 1994 28 March contd Calidris fuscicollis Puerto Raga, 15 km N of San Clemente del Tuyu by road, Pto de Gral. La Valle, Provincia de Bs. Aires, Argentina This afternoon I've been seeing a new WR walking motion. At first it mislead me, as it is so different from the style in which I am accustomed. I thought that it was a different species. This is a mimicking wading, halting walk: walk, balance on one leg, another step or two, balance again and peck etc. a very difficult rhythm. 1815 - large flash of mixed birds flying up in response to approach of parasitic jaeger. The many foraging WR (previously dispersed) coalesced into 3 or 4 100+ bird flocks + whirled around as the jaeger handled gulls & terns. 1845 - 10 wr and one Agreut working up along channel when. These are territorial birds. Thus, however, are in an analytical flock, moving 150 m while never separating out over an area of more than 15 x 15 meter. 29 March watching landing behavior of WR - how the birds generally cease flapping + glide - not a clean process but one in which % time gliding increased just before landing. At landing the wingspan out, with a quick flutter + tuck after landing. No show. Along the windward side of Puerto Raga at a mixed high-tide roost (see journal 3/28 and 3/29) I collected 5 WR (125-129) Arroyo Chico, Sta. Lucía, Mendoza, 35 km S of Tandil by road, Pto de Medanango, Provincia de Bs. Aires, Argentina grid count + total survey figures indicate an influx of WR into the Arroyo. 6 Banded bird, including ~2 non-territorial ones. See journal. 2 April North of Canal 7 into Laguna Mar Chiquita, 21 km N of Mar Chiquita by road, Pto de Mar Chiquita, Provincia de Bs. Aires, Argentina See journal. An apparent when we came out onto the mudflat that every territorial bird, as I percent heard speaking, saw numerous Sumpulatae, also crouching. ~500 WR near the mouth of the channel - between the mouths of the two Canal 4 channels (downway). In the flock at Lower Channel there is a tremendous amount of aggression. Not all of it territorial. Within the territories we are noticing first appears to be generally located along the edge of a small island just out from shore, + across the channel separating this from a shallower area which runs into shore. Within the 'channel' itself there appear to be more than ten individuals. It may be that borders are located in here. I must admit that in here where the territorial birds are would have to be called patchy. See journal. In the exposed wet mud we find many traces of WR foraging - thick bill prints are everywhere. But predominantly in shallow depressions. 0.25 x 0.25 m. - e.g. old human footprints, old duck lapwing footprints, cracking mud, etc. It is apparent that some of the bill prints are made with an upturned bill. 28
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{ "text": "SP Myers\n1974\n\n2 April\n(cont'd)\n\nMouth of Canal 7 into Laguna Mar Chiquita, 21 km N of Mar Chiquita by road, Pelo de Mar Chiquita, Provincia de Bs. Aires, Argentina\n\nFirst, every after they are obviously paired. But more important, there are 3 types of holes. Script ones shaped: O + about that size, then the paired holes shaped: ☐, about that size. Fantastic. W along the shore at the mouth boats the strip of foraging area available to the birds is less broad than it was 21 March. W foraging from edge of day saw all the way to about 5' beyond the edge of the wet mud (+ open water): ~25 m.\n\n3 April.\n\n- first WR heard at mouth of lesser channel at 0915 (dawn 0805). We had placed nets at 0600. By 0930 it was obvious that water was lower, + that there was a broad band ☐ of WR, very dense indeed, foraging out at the edge of the open water — today out beyond the end of the grid (wider beyond the tidal marker). By 0945 they were beginning to trickle in ☐ to the mouth area. We noted + heard 6 WR. Birds behaving territorially within 10 m of net + us working.\n\nFrom 1145 to 1300 recorded all WR territorial interactions occurring within and around subunit #1 of the grid which we placed activity. Also recorded #s of WR within #1 at 5-min intervals from 1200-1300, and effort fit I knew what was happening there, i.e., who was who + where they were, I subdivided the total into # of territorial birds on the grid as opposed to # of non-territorial for at least those places where territory was not on the grid. See map & tables pp 30, 31 and following tables.\n\n\n\n\ntime\t\t\t\t\t\t\t\ttime\ttotal #WR\t# tu.\t# flocking\n1200\n1205\n1210\n1215\n1220\n1225\n1230\t7\n1235\t7\n1240\t9\n1245\t5\n1250\t3\t2\t1\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t [TRANSCRIPTION_TRUNCATED_DUE_TO_LOOP]
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J P Myers 1974 Catidris fuscicollis Mouth of Canal Santo Laguna Ullar Chiquita, 21 Km N of Mar (Chiquita by road), Bellin Poto de Ullar Chiquita, Provincia de Buenos Aires, Argentina 3 April (contd) exclusion employment as part of the territorial repertoire. By using a modified Oecumenic range-over strategy that the [illegible] # of territorial WR necessary to explain the distribution of foraging-supplementation—and careful following of individual territorial core for several minutes time (in order to set the patterns of their foraging effort) I placed the ——— noting territorial preference. A count reveals that 5 territorial WR that were partially or completely (only 1 of the 5) on the subunit. At any given time there were no less than I found on the subunit (a minimum which occurred between the 5 min interval sample). Generally, there were more, averaging 6.4 birds per count (8 samples). The distribution of the territories in the sub unit was not at all even — 4 clustered in the lower half, and one just penetrating the subunit near the upper right stake. Although not reflected by the maps, total WR foraging effort was distributed in a loose wire fashion. Very few birds foraged out in the shallow water in the upper left, although for 15 minutes there were a few birds near the upper left stake. i.e. almost all foraging by other ten, or non-ten levels was on territorial, located in the mud-vegetation mosaic territorial habitat features 5. subunit 1 25 x 25 m unit open water shallow mud-sand 1 3 2 A mud-vegetation mat mosaic of Azola After 1 hr 35 min observing, I felt that I could ID with fair certainty territorial birds while taking the 5 min interval sample. ID done on position + a quick flash of behavior there (no fixed nor individual markers). Therefore in the complex array in the lower half there was room for more. However, I felt it was small. … I deduce(?) this data at a ratio of territorial : non-ten birds (Phillaeaceae in Table pp 29): [illegible], 2/1, 4/1, 3/1, 3/2, averaging to 2.6:1, or 72% of birds being territorial. Note that the distribution of territories over the subunit is anything
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S.P. Myers 1979 Calidris fuscicollis 13 April (cont'd) Arrayo Chico, Estancia Medeland, 35 km S of Juancho by road, Pto de Madariaga Picnick Bs. Air, Argentina Difficult to find: the ones that I have seen before they fly are typically within 6' of the water line, nestled down into a old cow-hoof print. Their back coloration does not provide much contrast when seen with the light-like I am using. Wetting efforts were unsuccessful, probably because the head lamp was not sharply enough focused, resulting in the bird seeing light bouncing off my fat as I walked. 15 April tried spot-lighting again, this time with a modified lamp. Also unsuccessful. The lamp probably is not bright enough. Not as many WR found this morning, until 0825, when a flush flew in (I heard it) 0819 while reading subs of linear grid a flock of WR flew over upstream. By Loo dived-squawking against the surface as if to avoid detection. The grid data show an increase in the total # of WR. But nevertheless I was struck by the much greater tightness of the distribution of the birds - they are feeding closer together, tolerating one another. And I saw no sign of territorial interactions - even Ry Loo is starting to stray, being below subs on the running down sample. For several days there had a gut feeling that the territorial system-the dispersion- is breaking down. Today's impression reinforces that. [illegible] 1040 at the end of the grid) above the [illegible] grid fence, I found a flock of 90 foraging WR - staying very close to one another, moving back and forth within a 75m stretch of arrayo. 4 banded birds present: Rply, RyLrg, RoLor, RoLoy. The flock was very spooky, + when approached if split into several smaller flocks of ~30 birds/flock, they going upstream & the other down. I followed the upstream birds. At 1115 collected 3 WR - 131,132,133. Returning down the Arrayo I stopped by Ry Loo and after considerable effort succeeded in reading the USFWS # - it is that corresponding to Ry Loo. I was worried because the bands had faded somewhat so that in some light they had a decided pinkish hue. 18 April read Ry Lp's USFWS # - last digits 36 which chicka. On grid reading this morning, when spiked up more than 1 WR/grid there were always invariably foraging within 1-2 m of one another. Running down total to 96 WR. The resighting today were very interesting: two old-timers, not seen for a while were back. 14 banded WR (4 banded since 12 April) including Ry Lor (laid on 3/13) and Ry Lpo (also 3/13). In addition Ry Lg was in the Arrayo - this is the third foraging area
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Calidris fuscicollis Arroyo Chico, Estancia Meekland, 35 Km S. of Juancholey road, Ptdo de Maldonado, Pcia de Bs. Aires, Argentina in which I have picked it up; the other two were in the roosting swamp + a similar spot near Farmhouse Rd. Rylo was defending a territory where it had been before - just N of subunit 24, though there was considerable intrusion by other birds (including Rylgy). I watched Ryloo for 20 minutes from 1110 to 1130. I picked it up in the usual spot - the southern part of subunit 5. But instead of concentration, foraging activity on sub 5 with a border near 20 on the S, Ryloo continued foraging upwind (i.e. south) over 75 m beyond the previous limit of its foraging activity. Not only did it receive no challenge (suggesting that its previous neighbor has departed), but it allowed another bird to work along the W side of the Arroyo from N of the 110 stake to 50 m S of 20 - in other words following the footsteps of Ryloo. However, only Ryloo did supply behind when it approached within ~10 m of Ryloo. This could hardly be called a territorial system; its only resemblance to that is from the topography of the supplementation, which was a classic slightly hard raise-squeak-flight supplant. Thus the similarity ended though, as the intruder just simply flew out over the Water + S of Ryloo, landing less than 10 m (beyond). Ryloo left then. Rylgy was between 8 & 9 again today. 20 April 3 definite WR rooting in Arroyo between 7-8, there may have been more netting at subunit 7-8 this morning, banded 6 new WR + recaptured Rygg. Its weight was up to 50g from 35g (measured 16 February) - an increase of 43%. Mean weight of WR's captured this morning was 50g (43-56). 1752 began blaring following 2nd on Ryloo at subunit 5 (see following date). At 1750 Ryloo was supplanted from the S edge and flew WR, 1755 - Ryloo was foraging N along the edge of the water when to the S came a Vanellus, also foraging at the edge. Ryloo detoured out onto the sand and around the Vanellus, keeping a 2m radius from the Vanellus. Ryloo is foraging in typical Arroyo fashion - search peck, moving quite methodically up + down the slue. No obvious 'species pairing'. Ryloo spending time on shore and in water as well, up to the pick-a-flax joint. Juvenile Zonibys approached WR. Then when a Vanellus chased the Zonibys it also spooked Ryloo - both flew down to subunit 4 + did not return. At 1820 I found a definite territorial (non-banded) WR at the S end of 8. [illegible] unit 9-1840 found a flock of 5 WR, including Roper, Rolvr,
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J.P. Myers 1979 Calidris fuscicollis Arroyo Chico, Estancia Merckland, 35 Km S of Tandil by road, Pte de Malanang, Piccia de Bs. Aires, Argentina 22 April cont'd woo Ryleo. Again today I was impressed by the tightness of (C.R.) grouping during the early morning foraging hours. 1023 began taking following data on Ryleo. Between subunits 5 and 4 when I had lost Ryleo after. The S wind appears to affect the foraging direction of Ryleo — only very infrequently (less than 5 min out of the plot) did it force facing downwind. Any downwind movement was usually accomplished by flying. The wind therefore probably has an effect upon the location of Ryleo’s foraging position because it will result in Ryleo spending more time in the southern part of its territory or perhaps even beyond if there is another food. Wind to S: Keep it back. Almost all of the feeding up to minute 32 has been deep-pelving with bill, standing in water up to its belly + repeatedly plunging the head under the water. Head under no longer than 2 sec at a time. So far there has been no intra-spec. interactions — there aren’t any more won near it. At min 14 two adults had worked down from the IV to the 12-13 region of sub 5, where last month Ryleo would have supplanted them from. It is over 60 m from them, however. At minute 15 they left, flying N. Also (minute 30) a we flew upstream (downwind) from the S and supplanted Ryleo, which flew further downwind. Chased by Zorilbyx at minute 42. A few minutes near the end of the observation period were the only period when I saw Ryleo foraging in the classic search-peck style of the Arroyo — a mode which used to be Ryleo’s only foraging mode. During the 60 min following period I saw only those above mentioned aggressive interactions involving Ryleo. During NONE of this period did it forage on any of its old territory, though this morning and at other recent times I have seen it there. Although the foraging behaviour — particularly the space specificity, and its solitariness — strongly suggest that it may still be territorial, there were no intrusions into its present area — which would have allowed me to say whether or not it was defending that area. Ryleo preened for only 2 minutes of the entire observation period, immediately after it was chased by Zorilbyx. 24 April 1900 — Ryleo in a flock! between subunits 2 and 3. Took Microhalutat data on Roboy 25 April 0827 — Subunit 3 two feeding within 3” of one another in the same hole
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Calidris fuscicollis Arroyo Chico, Estancia Medeland, 35 Km S of Juncal by road, Ptd de Madariaga, Pcia & Bs As, Arg. point where one van at the other, pushing the other out (literally) 25 April (cont'd) due Mekland Tajamar, 1.5 Km W of Farmhouse, on Estancia La Atlantida, Ptd de Madariaga, Pcia de Bs As, Argentina 1130-1200 see map in journal. 150+ WR foraging in the Tajamar, which contains a surprisingly amount of water in comparison with the Arroyo. A considerable % of WR are territorial; I would estimate 50% plus perhaps 80-90% along the narrow mud border, and a smaller % (for maybe the same) where habitat appropriate for WR's opens up into a broader area, + where there were more WR. While walking around the Tajamar I kept the population in a constant view; the presence of ten individuals was very apparent. One band heard Ro Lago. No other bands, despite a diligent search. 26 April Arroyo Chico, Estancia Medeland, Ptd de Madariaga, Pcia de Bs As, Argentina Ryloo with Ro Lory and 20 other WR between subunits 9 and 3 at 0930. Ryloo was in a flock on subunit 6, along with Rplr and RyLpy, RoLrr. There are other bands (wide present - one Chf. [Rylo]) and one Zorilpyx (Ro) which had likely been territorial on 7 or between 8+7; they later became now day, suggesting that the flock moved downstream. Flechero Bay, 1 Km S of Punta Canos by beach, Golfo San Jose, Peninsula Valdes, Chubut, Argentina 6 May 20 or so WR foraging on the broad sand-mud flat with a few sanderling and many Charadrius falklandicus. Very little sign of any body molt. Skittish. 27 May 1 WR at the 3s near low tide line this morning, foraging near a few falcklandicus
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JPMyers 1974 Calidris fuscicollis Estancia Medeland, 35 km S. of Tucumán by road, Pto de Madariaga, Provincia de Bs Aires, Argentina 23 August 1010 in the Arroyo part the linear grid (see map p. of Journal) as a flock of mixed bairdi-WR flow by. The former predominate, but several white-rumps flashed and I heard afterject: calls. The first of the season. I only wish that I had been able to be here earlier. We very uncommon w.r. to bairds, which themselves are not frequent. Found a total of 25-20 between the grid and the Rte 14 bridge, all within mixed flocks flying or foraging along the Arroyo. Although they are talking, there is no apparent aggression + certainly nothing space- specific. Collected 2. One not collected still had riddish intermed. scapulars Mouth of Canal Tinto (Laguna Mar Chiquita), 21 km N. of Mar Chiquita, Provincia de Bs Aires, Argentina 24 August a flock of predominantly WR (but mixed w/ bairdi + Micropalama) foraging along the mod flat (see map p66 of Journal). very tight flock, skittish, moving frequently by flying 20m down or up, calling while flying. WR calls the most frequent. Some chatter, but no sign of SS aggression. In fact there was very little aggression, about all that I could detect were occasional down-tips of the tail which accompanied 'head-plunging': e.g. when the head or bill was thrust downwards into the water, either the tail curved down, or the wings would up. Perhaps an individual spacing mechanism. No banded bird Arroyo (Estancia Medeland), 35 km S. of Tucumán by road, Pto de Madariaga, Provincia de Bs Aires, Argentina 25 August at 0815 found a small flock (7) WR at unit 10 of linear grid. foraging along a saturated but exposed mud bar in the Arroyo. Moving as a group. 2 'dropped out' - flying off. The remainder all tight, occasionally one or two falling behind only to run to catch up. Little aggression. Payimg much attention to the calls of other shorebirds, particularly Erythrocyphus and Vanellus: they stop feeding, part-up with their bill pointed slightly down. [a thought: it looks as if adults may winter further south than juveniles (only because I had mostly juveniles here last year). If the adults arrive here before Erythrocyphus, Oricopelus, etc depart for the south, and if they join them in flocks, then they may keep moving, whereas the juveniles arriving after the Erythrocyphus, etc. elegant might not be so endured. (only a thought)] Feeding is almost all scratch- peck. every one in a while a head goes all the way into the water. Never any filter-feeding. 0825 the unit has been breaking down. The 6 are spreading out,
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JPMycos 1974 Calidris fuscicollis At Arrayo Chiro, Estancia Medaland, 35 km S of Tucumcari by road, Pric de (Madagascar), Pcia de Bs As, Argentina 31 August (contd) 1125 the birds flew off. I must comment on the general spookiness of these peeps in the Arrayo now. Is this correlated with some migratory behaviour? — an increased tendency to move — or loss of a site tenacity so that thresholds for speeding would be lower? Started taking a new type of data: % of birds which remain within a 10m radius of where they were when I first started to watch them during a 2 min following period. If possible, distance moved will also be measured. This is designed to examine the tendency of the birds to restrict their movements in space, + change place. 1 September at 15:26 taking 'site tenacity' data and observing interactions within core-bird flock twice within the past 10 min. I have seen a white rump begin ~30 cm away, run at a bird’s with no obvious pre-act signal, and bump it with what looks like an extended cheek. The birds then runs away, after regaining its balance — which, by the way, is no mean feat here this morning: I’ve seen several peeps fall and have to fly because they had slipped on the ice (see journal). Took micro-habitat data on a core — it had been foraging through a 2 cm motor hole in a thin (extra thin) sheet of ice. One instance 1135 of a WR bumping another WR. This also entailed a squeak, but I don’t know which one (the attacked or attacker) made the noise. See bandidii apparent. 2 September 1100 observing at 15:26. Flock of 50+ peeps, largely WR. Taking flight site tenacity data. Some have been flying before end of period, but the flights are not 'total' — they involve flying 20 m up or down stream to a point still within the area covered by the flock. They are also flights of individuals, not instances when the entire flock goes up and settles down again. [Frequency of aggression up noticeably.] The 'individual flights' are frequent — not necessarily by a given bird (in fact certainly not) but every minute or so a bird picks up and flies off. This results in a constant re-shuffling of individuals along the 100 m of Arrayo where they are foraging. The total dispersion of the flock is not far from being even over the small stretch in which they are distributed, especially if looked at as an average density in time. But instantaneous clumps occur, 5 or 6 birds concentrated in a 2 m² area, etc. The individual flights shift the position of these concentrations. Birds are also moving on the ground, fairly continuously albeit slowly, on the ground. 3 m/min was the rate I measured.
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J.P. Myers 1974 Calidris fuscicollis (15,27) Estancia Medaland, 35 km S. of Juanicho by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 6 September - 0930 observing WR on grid 11. See journal + grid data book. 940 - been watching them for 4 minutes since 3 WR and one Baird's flew onto the grid. Foraged steadily upstream (slight breeze today) from the pt where they landed in a tight flock, into the birds all within 1 meter m of one another. In 4 minutes they moved 22 m, i.e. 5.5 m/minute. At that point they left the grid, still in a very tight flock. 0957 - the WR have become 5-6 softfeather staging within 1 m of one another; then another is clearly visible, but the 3rd is ~30 m away with a Baird's. One of the together group appears to tail lower each time that it sticks its head under water (water bend) to feed, whereas the other plunging to comparable depths, do not. See no reaction by the other bird, nor does there seem to be any crucial distance determinant for the behavior. 1002 - they flew. 1 Baird's and I we joined them in flight and they landed 15 m downstream. (5,13) to (15,27) Arroyo Chico Estancia Medaland, 35 km S. of Juanicho by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 11 September see Baird's sp. accent re-composition of prep flocks today. picked up a large flock of WR this morning between subunits 6 and 7 ((15,12,20)). They flew back to subunit 5. + D followed. Miracle of Miracles!! 0905 Rp Lg - banded 15 January 1974 in subunit 1 was in the flock I last saw it 18 April in subunit 4. The flock was feeding madly between frequent short flights up and down the Arroyo. 0930 began reading grid 12 - 14 WR and 16 Baird's, but only 2 of the latter were on the grid (while 8 WR were) for during first reading, 0943 most birds flew because of a cow in vision. But by 0945 they were back, grouped at the high end. After a series of disturbance courtesy of cows, sheep and a ? ranchhand 1030 collected 2 WR at (13,24) (2,3) La Orqueta, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 14 September very successful per-dawn banding session. netted 11 WR. See banding schedule, journal (10,13), Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 15 September see Baird's sp. accent re mixed WR-Baird flock behavior in evening. (15,26) Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 19 September 0812 began watching a flock of WR ±100m S of grid 11. 24 birds + 74 WR flew in later. Wind very light. Within the flock I do not see the expected parallel circuitous manifest
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J.P. Myers 1974 Calidris fuscicollis (15,26), Estancia Medaland, 35 km S of Juanico by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina. 19 September by the mixed Baird's/Curlew flock observed 15 September. 0814 - continuous low frequency chatter perceptible from the car at the same time, I see no head-head orientating (asive confused right now) because scaral crows are close enough to be causing a disturbing effect. 82° of the flock have dropped out of the moving flock now, beginning to preen. Front for so still moving. Others around 30m upstream (downwind). Then dropping out began to pick + preen in plain view. It looked as if when they did so I began to see much more parallel - with the wind - orientating not invariant. 3 more dropped out of front. 0822 the 'drop-outs' are still in a row where they remained. 0827 2 moving upstream, then all flew - upstream. 0830 watching 2 were foraging. One was approaching the after head-on, came within 4". Then as they approached closer, they began to shy away + around, until not facing, passing around. 0842 moving part of flock continued on 40m, 6 birds very tight. Behind them (i.e. in area through which "invariant" passed) are strung out 9 birds, apparently remaining evenly spaced in a line along the Arroyo. 0847 the strung out birds were moving on. (23) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 22 September see journal vartv 8.12 to 11.17 Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Arg. surveyed fuscicollis flock between (8.12) and (11.17) on Arroyo Chico. fuscicollis bairdii locabini 33 2 (8.12) 0 2 (9.14) 2 0 (9.14) 15 0 (10.13) 11 0 (11.15) 34 1 (11.15) 14 1 (9.16) ______ ______ 109 6 *1720 - of not is the reappearance of White-rump Lyg. I bonded more with that combination, making it either Ry Lyg or Rolyg as it has probably lost a band.
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JP Myers 1974 Colidris fuscicollis (13,21) Arroyo Chico, Estancia Medaland, 35 Km S. of Juninco by road, Ptdo de Madariaga, Pcia de Bs. Aires. 2 October Arag, Argentina 1050 - found flyby between subunits 7+8. it is possible territorial. went through instance of supplanting, but why conviction was consistency. (13,22) Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina. 1115 - definite territorial bird we have between subunits 8+9. very territorial bird - tail down, consistent supplantation, flying from 10's of meters. appears that when it lords after sup- planting it holds its wings up root - there is a distinct difference between the leading posture in a territorial bird as opposed to non-territorial. this individual is following intruders in clean flight for 30-40 m along the length of the territory, chasing less than 50 cm behind the chased bird, following every move. Sometimes chases when others fly over. it is foraging over ~70 m of arroyo, supplanting along both side. chase is intense. supplants from a min- imum of 40 m, probably 50-60. however sometimes inconsistent: orients into wind (as) so that birds can approach coming upwind (i.e. upa). but the territorial also forages downwind, + when it is it is consistent in position of supplantation. Grid 13 (13,24) Estancia Medaland, Ptdo de Madariaga, Pcia de Bs Aires, Argentina (finished linear grid run at 0755 - total of 25 wr on subunits. territorial bird in 10-3 perhaps 9.) 4 October 0800 began sampling Grid 13 - [illegible] then 10-4-74A began following 10-4-74A, a territorial bird on grid 13. took 1 hours following data. During that time it supplant an incredible 37 times, some of them flights of over 30m (as) was supplanted by neighbor as it intruded too far upstream. 10-4-74A shared borders w/3 other birds, 2 of which had controlled porchive of Grid 13. It appeared that 'waves' of intruders came in - then would be periods of contin- uous feeding (i.e. no supplantation) for up to 9 minutes, and then several minutes in which, in each minute, there was at least one supplantation. 10-4-74A ranged over (i.e. controlled) ~425 m² of area, only ~50m² outside of the grid. It was very consistent in its supplantation. During these waves, intruding birds would be chased from one building to another, sometimes not even being able to land. 10-4-74A fed 73% of the samples (i.e. 73% of times that it's position was noted, it was feeding.) One supplantation of a bird.
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J.R. Myers 1974 Calidris fuscicollis 4 November [illegible] Arrayo Chico, Estancia Medaland, 35 km S. of Trancoso by road, Pto de Medaniana, Pto de B.S. 50 journal re today's sample. We drove all the way off the Arrayo to (24.32) in search of birds We 1 to see whatever. 1040 at (24.32) we found a [illegible] flock ~20 we spied along the drainage ditch while [illegible] to the arrayo from the B. Observation quickly revealed that the majority of birds were behaving [illegible] in a space-specific fashion. I collected one (171). Shortly thereafter I found Rylgy, a bird [illegible] I'd not seen since 9/21/74. It too was behaving [illegible] 1215 at subunit 1* of the linear grid; on closer examination of the birds foraging here it appeared that there are 2 plumage types: one is the typical more-gray winter plumage that the Medaland birds have been in for some time now, the other is a much darker plumage, almost like a Baird's and even brownish. But the feathers here are mottled with white, particularly the wing and scapular coverts. I strongly suspect that they are juveniles. They represent a major influx into the area, as there, noted on subunit 3 are ~110 w/w, 80-90% of which have the 'juvenile' type. Otherwise they are also obviously in possession of a portion of their breeding plumage. In this flock a great % of the s-s aggressors (and also m.s.-s) is by these birds (for you might expect from just sheer numbers). Very aggressive. Much energy. Are juveniles excessively energetic? (Grid 14, Arrayo Chico (10,13), Estancia Medaland, 35 km S of Trancoso by road, Pto de Medaniana, Pto de B.S. Buceros late, Aquilata Sampling grid 14 from 1635 →. Lois taking following data. @ 17:05 I began to help her follow a gray bird (one individual which we select) because it appeared to be near [illegible]. It is 11-4-74 A. began (S.1) subunit where it has been crouching part in this a feeding position, picking things off of the surface. Not sure yet whether it is s-s. The majority of us here thus a [illegible] are incredibly ag- gressive, much appearing s-s but also some intermediate forms. 11-4-74 A feeds in the crouch, peering at the surface, and then periodically (~every 2 min) runs off to the water (a ~30cm away), shells there for 5-10 sec, and then runs back to its foraging site. Does not appear to be carrying anything to its D. Not a quarter of it working slowly forward water: 11-4-74 A abruptly breaks off feeding, runs direct. Very 'intense' behavior. Most of them facing into wind, not preventing others from entering into area when it has been foraging. NON S-S. Re peeling
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J.P. Myers 1974 Calidris fuscicollis Grid 14, Arroyo Chico (10,13), Estancia Micheland, 35 km S of Tiendes by road, Pto de Vlaharica, Recalde's New, Argentina. 4 November (Contd) behavior of 11-74 A. (as well as others, include LYL) when it appears to be sampling the sub, but only with a shallow peck. Is that like the Ch. falklandicus shake-a-leg technique? Does it somehow reveal the position of prey, by eliciting movement? 1730. Rols-B, present and territorial here this afternoon by the (6,1) stake, appears to be wrestling in earnest preliminaries. perhaps. Rols-B border fighting continuously with a "juvenile" [illegible] to its south. Each of them appears to come off of about 5m of beach. 1732 11-9-74 A flew with all the other birds less than a minute later everyone returned. Rols-B did come back to the same spot and is again defending it, so there is some order to the whole behavior. Also, there is a juv. fan-tailed [illegible] immediately to the S., probably its neighbor from before. There is a dominance effect in operation along the shore. 4 things happen given the following situation. A B C D - shoreline 1) A bird lands between B and C. Either B or C supplants and it flies 2) A bird lands between B and C. Either B or C supplants and the bird chases the other down (i.e. whichever did not supplant) 3) Q lands between B + C. -> they both move out as Pagoagresivo, and they sham A -> D away from them. This chain reacts down the length. 4) Q visits along, for e.g. coming in from the left. A chases it to B. B to C. C to D. etc. This usual causes a rash of border fights between A, B, C, and D if they are united. When the flock flew at 1732, and then returned, most landed in a central point and after a moment the process spread out. How I wish that I had some banded birds in the flock to know if all behaved like Rols-B and returned to the site which they had been defending. A striking feature of the flock's behavior is the frequency of wing-out display. Even more so is the tenacity with which most individuals remain on the same site. [illegible] Nothing
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J.P. Myers 1974 Calidris fuscicollis Grid 14, Arroyo Chico (1915), Estancia Medaland, 35 km S. of Jramdio by road, Pib. de Mardingo, Provi. de Bs As., Argentina 4 November (cont'd) at all like the directional flashes which were characteristic in August and September (see ap. accent) the genus seems to be to take a site and keep others off of it. But they are still those which appear to lack the tenacity of others - a continuum. 1974. 5 November beginning % TB calculated at 0800. 0807 - not as many birds here this am as last evening. Looked ~ 5, including Rolo B which is prob. territorial, so appeared to be last evening. Rolo B suppliying from large area and is no longer bounded on south by [illegible]. There are no [illegible] in grid. It appears as if the territory is expanding, of Rolo B definitely, even the morning series observations began. 0810. 11-5-74A is also expanding (from a territory incured, 5 of Rolo B on the peninsula (see % for bird data book). 0846 - and then WE try to wedge in between stand Rolo B? - it's been forced out now (0852) + going to island just to south. Water level decreasing, exposing this island in (61) and (11) substrates. 'Peninsula also growing'. 0903 - obvious from watching border interactions between 11-5-74A and Rolo B that the ter- ritorial borders show some flux. Is it still evolving (i.e. expanding system)? Border positions not as fixed as some that I have seen previously. 0954 - a rabbit came by. All space-specific aggression ceased, including that of Rolo B and 11-5-74A (there is one other territorial bird). How screwy. 0952 - still no supplanting birds moving in. 0959 - Rolo B just began chasing again. 1005 - large disturbance by horses. All birds except Rolo B, which crowded in hiding by the (61) stake. Now proceeding. 1040 only now Rolo B (since 1005) has been only ten bird present and defending. It looks as if A banded bird, or at least there are hints of 5-5 aggression in its territory. Crowding with Rolo B. 1048 they flew again - all except Rolo B. 1157 - only ten bird present still Rolo B. A few we are making their way back into the area, [illegible] What appears to have happened during the morning is that ~ up to 3 territories were in the grid but only one was well established - the others were definitely defended for some time but their defenders left the area quite readily if spooked, and took their time in getting back. 1101 - stopped cursing, [illegible] [illegible] [illegible] Rolo had gone off trailing up beach ~75 m to peen behind copse. A small flock moved in
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J.P. Myers 1974 Calidris fuscicollis (10/3) Grid 14, Arroyo Chico, Estancia Meldoland, 35 Km S. of Juanadas by road, Pto de Madariaga, Provincia de Bs. Aires, Argentina 5 November (cont'l) and it looked as if Rolo B was going to ignore them. However, within less than 1 min after its territory was violated the bird broke out of preening and flew from a distance of over 20 m. 1112 - a bird definitely defending 11-74 A's peninsula. [Note - Lois took following data on several birds, including Rolo B. See following data book. Recall that we have following data for this bird on 10-7-74.] Arroyo Chico, Estancia Meldoland, Pto de Madariaga, Provincia de Bs. Aires, Argentina storm producing same conditions as 4 November. (see journal that date) 3 concentrations of WR, ca 4 November. See lineargrid sample. Birds scarce except in three areas. 0940 began watching flock at the uppermost of the areas - (5,23). Aggression very high rates of aggression due, much of it S-S, but it is not clearly so. The area is. [sketch with labels: islands, Walker, shore, a, b, c, 5m] Most of the birds are in Zone 4, which has several other birds in the Arroyo, scarcely heard by the wind. Aggression here is incredible - each bird appears to get into the act several times per minute. I watched several birds for 20 min - one appeared to be at least S-S in foraging with most of its aggression S-S, but perhaps so largely because of S-S foraging. Others were less S-S, but kept in line by the 1st bird + others in vicinity. Many trix-35mm pictures. I then went to the B zone, where birds were much more clearly
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J P Myers 1989 Calidris fuscicollis Arroyo Chico, Estancia Medaland, 35 km S. of Ivañacho by road, Pto de Madariaga, Provincia de Buenos Aires, Argentina 13 November (cont'd) spice-specific in aggregating. However, here again there was a large n-s.s. component. I had the impression that a few birds were more so than others - distinct impulsion - and that these were largely responsible for the overall order. Beyond zone B the birds became much more separated and n-s.s. Collected one (174) after 30 min observation. In zone A they are also truly s-s. collected one (115). The further from zone B, the more s-s the birds seemed, also, the less dense were the individuals. which came 1st 14 November returned to 15,23 at 1120. density way down, much I did not stay to observe (17,28) Arroyo Chico, Estancia Medaland, Pto de Madariaga, Provincia de Buenos Aires, Argentina 17 November 0830 began censusing for %TB calculation. see journal. great deal of activity by those we present when I began. Earlier during the morning I had taken 2 microhabitats and placed stakes defining the grid. At first glance I noted that some were within the vicinity appeared to be fun, but that others were not obviously so. Because of the topography of the area + the general drying processes going on in the Arroyo, it is possible that this area has been recently invaded. Certainly, on 13 & 14 November the censuses were specialized: 0830 - appears to be ten birds in (2,0), (3,1), and (3,0)-(4,0)-(5,0) (5,1) region but as yet is very complicated. 8 supplemental birds already in the (3,1), (4,0), (4,1), (5,0) (6,0) region (see plot of sites of aggregation in %TB data code. one bird, 11:57-19 A daily unit of the aggregating. also a lot of aggregation in the central area (2,1) ok (but is not clear if s-s. - largely because of the % of birds pulled in from . perhaps area where s-s. in developing. focalizations are occurring constantly. 0845 - not able to keep up in recording %TA. aggression in non-territorial areas. 0917 - rate of aggression quieted down considerably. perhaps a max. now of 2 ten. birds run out at n/5. the rest are showing some intermediate behavior - dance from inconsistent distances, circling, tail up, etc. But Any are slowly drifting the locus of foraging downstream toward (1-12-3) A (center
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J.P. Myers 1974 Calidris fuscicollis (17,28) Estancia Modeland, 35 Kms. of Sunchu by road, Pdo. de Madariaga, [illegible] Bs. Aires, Argentina 17 November (cont'd) that the longer a WR is able to remain in a specific site, that the more developed is its foraging space-specificity, the more likely is it to aggress in a species-specific fashion.) 1020 - aggression appears in cycles, going through another dell. 1025 - a WR in (2,0) and (3,0) 11.24-74C is establishing itself on this (w) side, as well as a (5,1) region. [illegible] new ten bird in (6,2), wedging itself between 11-17-34 A and the central area 1031 - beginning to go up off shore to preea. 1036 - no territorial bird in the Estancia NE part (0,1) - that area just suffered an invasion - ? new WR - a-1 there was no supplating. 1038 The new flock is spreading out somewhat, moving downstream at 1043 - The W-S.W. aggression confusing because of the windetta aspect, not only do they aggress but play pursue - flying 10 m^2 over the heads of other birds + continuing to fight when they land. and afterwards there does not appear to be a real adjustment or correction in position. 1045 - in northernmost area of 117-74A's territory - i.e. where 'D' is wedging in, two birds; 'D' one of them, went into a crouch. 'A' came up from S and chased both. 1048 - frequency of S-S picking up, or at least there are more long distance, consistent supplantations occurring. 1049 'C' continuing, air 'D'. 1051 flock took off glided upstream 30 sec later. began preening, then 20 seconds later took flight again + went to W side of stream. sitting quietly there now at 1053. 1054 beginning to drift back to grill, some flying others foraging directionally. 1054-5 flow down. 1055 continuing in, filling in same areas as used prior to original flight. 1056 - supplantation + fighting 1057 - 'A' is back, judging from supp's going on at usual sites. 1110 - finished last census. see journal for general results, [illegible] % TB book for map of aggression sites + distribution of territories as well as raw census data. Will return tomorrow morning if poss; pls re-calculate. 18 November see journal - rain this morning made it impossible to reach the 1728 region 19 November see journal. at (17,28) water level has increased to submerge the habitat completely. [illegible] WR within the limits of the grid.
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J.P. Myers 1974 Calidris fuscicollis (11,16) Arroyo Chico, Estancia Medeland, 35 km. S. of Trancillo by road, Pteo de Madariaga, Avia de Bahía. 19 November % TB calculation #4. See journal. We placed enough stakes to define a 15 x 90 m unit and to allow following data. Rplp A on unit, obviously territorial (and had been so since 11-3 or before). Then an 2 other obvious "in" birds as we began. Occasionally birds are coming through. Mean 10:30 - many border interactions between 2 birds in the lower area of the grid. Lois is following one - 11-19-74 A. 1103 11-19-74 A has been supplanting consistently as reflected in following data. One thing which appears to happen is that when it supplants going into the wind (W) and the other intruder responds by flying across the Arroyo, 11-19-74 A supplants B on the other side and soars down wind to the SE end of its territory, in fact something going below + drawing a supplantation from its territorial neighbor to the SE. This bird (11-19-74 B) just flew over following a soar by A, and although it did not land, it crashed at A and then returned to the place from whence it flew. 'A' chattered also as B approached. 1116 - a flock of goldens + buffis flew over - all grid birds took off except for Rplp. 1120 - 5 wr c.1 1 birds have entered in to A's territory and are not being hunted. However, as they fed directly to the W, and reached Rplp's border, they were attacked + supplanting. 1127 - 'A' pack again and supplanting, so is 'B'. Using same borders, instinct themselves + for intruders. 1128 supplantation involved a classic 'wing-up' very reminiscent of Tryngite. Did the W wind catch a wing-out? 1158 'B' (which Lois has been following) - flew to this side of Arroyo as its southern neighbor came up to edge of territory. 'B' flew over calling, going directly towards the offender. Within 40 sec they began fighting - hopping jabbing, wing flashing - and then went into a border crash for 2 min: S Neighb. southern neighbor angle crowded ≤30cm { [illegible] bill tucked crouch tail up A & B SN came out first, shy backing away, pecking, and it then began to feed. When it was 40-50cm from 'B', 'B' began feeding, going away from SN. See %TB book for data also Linear 97B following for 11-19-74 A and B.
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J.P. Myers 1974 Catidvis fuscicollis (11,16), Estancia Medeland, Arroyo Chico, Ruta Pto de Madariaga, Lujia de Bs Aires, Argentina 25 November. su journal, see % TB calculations #6 (made on subunit 3 of the linear grid). 0825 began sampling censusing birds contained on a portion of subunit 3 (sub-sub units 11 → -1. (radius-unit encompasses 5 linear meters of shore (both sides). 0904 there appear to be at least 4 areas which show concentrations of aggression. only one, possibly 2 are space specific. the others are only partially so. see every fifteen hours see aggression plots in % TB data book. very difficult to comprehend now the spatial array on the grid because of the intermediacy of some of the bird's behavior - their inconsistent space-specific suppliants. 0937- it seems clearer now. 2 TB's present - one is 11-25-74t (follows for) took following data, and the other is one which follows so now following, 11-25-74 C (see deiscangrid following data). Both are usually consistent. But both will infrequently leave their territories. Other birds occasionally slow S-S, however, they are not nearly as consistent as A and C. (the latter is especially consistent, supplementing over a distance of 50 m.) The 'A' s consistency seems to be somewhat induced by that in C, i.e. 'A' forages between 3 and 8-9 stakes. C forages + supplements between 9 and 17 stakes. A is frequently supplanted by C and a significant proportion of the supplementation made by A occurs when it is forced out of 8-9, flies back down toward 3, and finds that in its absence encroachers have violated its area. However, I have seen many true supplementations by A, some which were not triggered by C. See plots of aggression in the % TB data book. Wind direction appears to be polarizing the direction of foraging, causing most birds to face + to walk downstream. This causes many of the violations of borders. When A comes to the border with C, it will often continue on, reading 10 before C flies down from 17 to supplement. However, it does not appear now that neighbors upstream from A are territorial (see map following page), until you reach an area ~15 m beyond the upstream end of the grid. NSS aggression does occur in the birds in the upstream part of the grid
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J.P. Myors 1974 Calidris fuscicollis (11,16) Arroyo Chico, Estancia Medaland, 35 Km S. of Tiernacho by road, Pto de Madacinga, Provincia de Buenos Aires, Argentina 25 November (cont'd) Tailflur upstream from the grid, at below and upon subunit 4 (200 m upstream), there is a large flock which spreads down as far as sub 3 (the grid inquisition). Birds appear to work from the sub 4 region to the sub 3 and back, or at least pressure waves reach sub 3, even if it is not the same birds involved. 1003 - Cabandoned its territory, flying 25 m upstream, and is now working back up. 1015 - Spicked up 3 birds in the vicinity, one being 'A', another a bird usually about A, and the 3rd one which has worked downstream. It is now obvious that this bird is C, having begun to surplant again as before, with the same face of aggression. Territory of 11-25-74 A Territory of 11-25-74 continues upstream to 17-18 Arroyo Chico upstream → Stake # 1 10 9 8 7 6 5 4 3 2 1 0 -1 Subunit 3 continues on → 5m unobstable materials Area censused + for which calculations were made (23,32) Arroyo Chico, Estancia Medaland, Pto de Madacinga, Provincia de Buenos Aires, Argentina 27 November Resighted Rqlg A today, first new resighting of one of last year's birds for some time. 1130-00 have been watching the flock in which Rqlg operates 6ed for 30 min, during which time they've left twice, once partially within the flock overlapping in space with its previous spacing position, and the second time flying 25 m downstream. The flock's behaviour prior to a spook was typical to that of the highly dense flocks of wke in prime habitat which evidences a confined degree of space-specificity - for example, similar to conditions of 13 November (as we spaced). The presence of Rqlg is revealing: each time that
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J.P. Myers 1974 Calidris fuscicollis (23, 32), Arroyo Chico, Estancia Medeland, 35 km S. of Juanico by road, Pto. de Madeniring, Provincia de Bs. Aires, Argentina 27 November (cont'd) The flock, including RgLy, has speckled; the birds (66-30 in total), have worked back to the same site — you could say that they were foraging directionally, although the directionality line is inseparable from the natural polarization of movement provided by the physical characterization of the Arroyo itself. When the birds reach areas in which we had been seeing S-S aggression, S-S aggression regrouped again. Furthermore, RgLy has returned to the same 1m x 1m patch of algae + mud. Thus, some order reigns beneath the confusion that we can be so overwhelmingly to an observer. And on that 'patch' — it is consistent in supplanting as a S-S median, not usually key individual space attributes. Other birds within the flock are less so; they appear to bounce from one another, pushed by birds behaving like RgLy. Aggression is intense — very quick (one + two) crowdley, tail-ups, tail-downs. And the chatter is incessant. I began a series of 35 min still photos of activity. Also of interest this morning is the fact that as one proceeds upstream, birds become less dense, and the spacing more even + consistent. This is also true downstream RgLy ↑ concentrating flock → areas of increased spacing thus the overall dispersion — a center with outlying areas of increased spacing + S-S — is very comparable to the 13 November conditions. [illegible] In this way, because the central area birds show intermediate behavior patterns — both in terms of an average bird, & in fact individuals — show intermediate behaviors, the behavior of the central area birds has many attributes of space-specificity.
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J.P.Myers 197- Calidris fuscicollis (15,23), Estancia Medaland, 35 kms. of Tandil by road, Pto. de Madariaga, Provincia Bs. Aires, Argentina 27 November returning from (23,32) [Land airport, on the way up, too] we passed by the WR area described 13 November. today it is a bit drier and the mat of algae has broadened considerably. Birds here are territorial. They have been that way the last several times (which I passed. [as noted 14 November]) There is no central concentration of birds showing mixed behaviour territorial, pure + simple 23,32 Armyo Chico, Estancia Medaland, Pto. de Madariaga, Provincia de Buenos Aires, Argentina 29 November 08:30 we are at site where 27 November Rylg and a flock were scrabbling (see wr sp. accent) today the water is up, slightly (very slightly). We are at the site described for 27 Nov., and birds spread over 100 m S + 200 m Worth. All or almost all are territorial, exceeding 50, with territories of 5m + in length, some extending up to 20-40 m + both sides. However, I can't find Rylg A. Instead Ryly? to hue ~ 50 m S of Rylg's area. Ryly is territorial. It may have been there yesterday 27 November [note - it now reads Ryly as the orange has fallen off. I read its USP+WS # -042 - + was cut in of the reading]. Thus the territory size here is somewhat reduced when compared to that which we see in climatic conditions. (13,21) (sub 8-9) Armyo Chico, Estancia Medaland, Pto. de Madariaga, Provincia Bs. Aires Arg. 1020 - in contrast to all other areas of the armyo received this morning (from 23,32+ south 6 here), there is a flock foraging in an isolated drying stretch of the Armyo. Looks like another 'central area' type dispersal pattern. Plus (ca. birds are at least moderately 5-5, with surrounding birds being more so (10,13) Estancia Medaland, Pto. de Madariaga, Provincia Bs. Aires, Arg. 1120 - Rylg A to hue ! instead of at (15,23) - with a flock behaviour in mixed fashion ¿Que paaa ?
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P Myers 1973 Calidris melanotos 01 Aug25 17 Km E of Luque, by road, Dept Central Paraguay 8:104m upper spotted flock of 19 medium sized pegs with no white on tail coverts, but white to sides of tail, dark upper breast etc. flying in the wind. Watched them fly for 5 minutes in circles without landing. Wind very strong, at least 20-25mph out of south. Birds whirling in it. They flew from S over the road and away across the field. Several (2 or3) stragglers around too. could easily have been in grass and flown while I was occupied with the main flock. Scoured the field and could not find any down. Drove about 10 Km keeping an eye out for more, but saw none (did see + hear a scrape). Returned to original field at 9:15AM 8:45 and the flock was back (or another) the same size. They were flying, moved over an area ~1/6 of a circle eta with a radius of several hundred meters, Wind is very strong. They finally landed, and disappeared in the grass behind a immediately behind a slight rise or fall patch of grass about 150 meters S of the 1000. Birds were invisible in the grass. Could not get out there due to fence and water, but the area appeared similar to flat by the road (through the scope). Short grass, less than 8" tall, very thick. It is a cleared palm swamp in which the palm has been removed and the grass grazed and/or cut down from a height of ~3ft to 8". There are also cattle, horses, egret + this in other parts of the field (closest birds area 100-200). Scoured the area where they went down with a scope for several minutes + saw nothing of them. Did see
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JPMyers 1973 Calidris Melanotos 03 Sept 3 contd 365 Km NW of Villa Hayes by road, Dept Bogeron, Paraguay sandpiper nearby. My collecting urge was too great to make any detailed observation of the birds. Got 2 with one shot. Others flew. The pool was by the road, very long (extended several hundred meters at least but only a meter or 2 wide). Birds were at the end or a small spit of mud. Water really was only inches deep. Vegetation on all but several square meters of mud, when the birds were. @ 200 yds W of Intersection of Canal 2 and Rte 11, by road, Peia de Buenos Aires, Argentina Sept 16 1200 Pectorals mixed in with flock of other SB's. There are at least 10, perhaps as many as 50 pectorals here, but they are feeding on the ground + I can't get a good count as they are too dispersed. Several of them are foraging near 300 several golden plovers. The habitat is what I have been lead to believe so classic - a pampas depression in the midst of a huge grazed field of low grass which continues 5 from the road as far as I can see. Standing water up to 6" depth in the center, but the majority being less than 3" depth + covering grass. The pectorals are along the edges where the grass starts to dip under the water. The birds are feeding "independently" of one another - i.e. There is no coherent flock as I saw yesterday in the Baird's - WR group at Laguna San Lorenzo, ~15 Km W of Castelli by road, Peia de Buenos Aires, Argentina 0800 - I am transcribing today's notes from tape, and inadvertently put the above location before this one, (which temporally was first) 2 Pectorals in a flock of peeps. 3 B10. 3 Pectorals another one in similar flock.
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JP Myers 1973 Calidris melanotos 35 km S of Tandil by road 1 km E of Rte 11 on Farmhouse Road, Estancia Meddled, Pcia de Buenos Aires, Argentina 23 November Approximately 15 Pectorals spread along shallow drying pond just to S of dirt road. The birds are well spaced out along the whole length of the pond. When I have been able to spot them briefly see one, they appear to be foraging on small emergent vegetation along the shore. Closest that one is to another ~15". But one is almost amidst a small flock of Yegga and WR. We are too much of a disturbing influence to see what, if anything, is maintaining the spacing pattern (united - even if it is real). The Pectoral gulls (Hydran) wait to fly up on my approach longer than the other species. I can hear them above the wind along the length of the pond. Farmhouse puddle, just W of Farmhouse, Estancia Meddled, 35 km S of Tandil by road Pcia de Buenos Aires, Argentina 24 November Four pectorals visible from road along the puddle. One is definitely defending a territory - chased 2 other birds consistently from an area during the 15 minutes that we worked. Suggestion that another of the birds is territorial also, but only showed aggressive counter which occurred when the first bird chased off an intruder, and the intruder then landed directly on second bird. The intruder was "traveling" with a solitary white rump - the WR was not chased by either of the two birds which appeared territorial. Nor did I see aggressive interaction between a pectoral 50 yds from the road that was feeding near 1/3 still sippers. It could be that the above mentioned intruder was displaced from its feeding area by our presence (as it flew up into the first bird's area when we approached) or it could be that it was moving around anyway. 28 November Rte 11 Pond, Estancia Meddled, 35 km S of Tandil by road, Pcia de B.A., Argentina From on top of the car just east of the pond (above it on the ridge) I can see 4 Pectorals, equal along the pond. All of them are on one particular type of vegetation, a short, broad-leaved fleshy plant that grows in mats along the edge of the pond. One of these mats I remember distinctly from 23 November as having had a solitary Pectoral foraging on it. Arroyo Chico Bridge, Sot Mertland, Pcia de Buenos Aires, Arg. Collected two Pectorals (046 + 049) out of the Arroyo. They were sitting low on the mud near the edge of the water, with several other pectorals, 3 W Phalarop, and several Yegga. One of them (046) had a possible [illegible], although I am not confident in my ability to detect
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JP Myers 1973 Calidris melanotos 35 km S of Tandil by road 1 km E of Rt 11 on Farmhouse Road, Estancia Medland, Pcia de Buenos Aires, Argentina 23 November Approximately, 15 Pectorals spaced along shallow drying pond just to S of dirt road. The birds are well spaced out along the whole length of the pond. When I have been able to spot them as they see me, they appear to be foraging on small emergent vegetation and along the shore. Closest that one is to another ~15". But one is almost a midst a small flock of Vegar and WR. We are too much of a disturbing influence to see what, if anything, is maintaining the spacing pattern (in fact - even if it is real). The Pectorals speak less (fly higher than) wait to fly over my approach longer) than the other species. I can hear them above the wind along the length of the pond. Farmhouse puddle, just West farmhouse, Estancia Medland, 35 km S of Tandil by road Pcia de Buenos Aires, Argentina 24 November Four Pectorals visible from road along the puddle. One is definitely defending a territory - chased 2 other birds consistently (nonhuman area) during the 15 minutes that we watched. Suggested that another of the birds is territorial also, but only observed an aggressive encounter which occurred when the first bird chased off an intruder, and the intruder then landed nearby to second bird. The intruder was "traveling" with a solitary whiterun - the WR was not chased by either of the two birds which appeared territorial. No birds observed aggressive interaction between a Pectoral 50 yds from the road that was feeding near 13 still sparrows. It could be that the above mentioned intruder was displaced from its feeding area by our presence (as it flew up) into the first bird's area when we approached or it could be that it was moving around anyway. 28 November Rt 11 Pond, Estancia Medland, @ 35 km S of Tandil by road, Pcia de B.A., Argentina From on top of the car just east of the pond (almost at the ridge) I can see 4 Pectorals, spaced along the pond. All of them are on one particular type of vegetation, a short, broad-leaved fleshy plant that grows in mats along the edge of the pond. One of these mats I remember distinctly from 23 November as having had a solitary Pectoral foraging on it. Arroyo Chico Bridge, Est. Medland, Pcia de Buenos Aires, Arg. Collected two Pectorals (046 + 049) out of the Arroyo. They were sitting down on the road near the edge of the water, with several other Pectorals, 3 W. Philomachus, and several Vegar. One of them (046) had a possible [illegible], although darn not get confident in ability to tell.
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J.P. Myers 1973 Calidris melanotos 2 December Farmhouse Pond (Grid #1), Estancia Wiedland, ~35 Km S of Juancho by road Puciack Buenos Aires Arg. I may be looking at only one Pectoral on the grid this morning. Certainly, flew or recorded in colony columns 25+26 is the same individual. I don't know about the one seen earlier in 18/, as it flew between sampling times, nor and several other 000 sample with Pectoral in 23/2. However the last 4 samples did with the same bird moving 26/5 (1030); ~26/1 (1100); 25/3(1130); and 26/2 (1200). This bird appears to have a spot to which he returns to perch and not move in 25(3) Grid #2 Rte IJ Pond, Estancia Wiedland, Pucia de B.A., Arg. We are here to complete the staking up (Grid #2 at 1300). From the observation post I was able to pick out this Pectoral in the met of vegetation at the far end of the grid, where I have noticed that there is almost invariably a Pectoral. It to resting in the vegetation, two legs folded and breast down. More other visible. However when I approached the edge of the pond 2 others flew. 3 December Just prior to taking the first grid count (0630), at 0615 I saw a supplanting change by a Pectoral near 12/2 towards another that was 9/2. When I arrived here this morning (0600), I had been able to consistently find a Pect near 12/2. This was probably the supplanter, where the intruder came from I don't know. 0810 - Pct. from 15/3 was supplanted intruder in 8/3; remained to feed. Called while flying. 0827 watching Pectoral on 14/3 mat, while peering + fading. He called twice and then flew to the W., landing for less than 2 seconds in 103, then continuing to 8/3 where another Pectoral was. He chased this bird. At that point I switched to the intruder, who flew to 8/1 across the park. It was immediately chased from by another Pectoral, but when the chasing bird came near I don't know. Farmhouse Pond (Grid 7), Estancia Wiedland, Pucia de B.A., Arg. 4 December One Pectoral on the grid between 0600 and 0730 - (he stay) the whole time. No sign of any other Pectorals here. In the process of taking following data I observed one puzzle which can not be interpreted. The bird had been feeding as to 12/3.
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SP/Myers 1973 Calidris melanotos Grid 9 (Farmhouse Puddle), Estancia Wildland, 35 KmS of Juancho by road, Pucia de Buenos Aires, Argentina 17 December (cont'd) A posture. However, none of the other Pectorals evidence a territoriality. Watching one that just landed within 1m of another (within 1.5m of a third) - absolutely no aggressive display in this tried. Many of the birds foraging, a few preening + washing. Watching A still within 6" of another, bowed over feeding. I can barely see him because the grass is just about the height of his back and there are slight depressions. Watching two others in (3-4, 0-1) unit. they have been foraging together (1'-3') for 1 min at that distance. 18 December 0015 - in the same area I saw aggression yesterday, this is a Pectoral behaving as if he has a territory. Several supplanted by Pectorals in 5 minutes, plus one WR chasing, (Molina)2 Grid 3 (500m N of Farmhouse), Estancia Wildland, Pucia de B.A., Argentina grid counts of Pectorals may not be complete because the birds are all able to disappear in the grass. Watching a single Pectoral: 1:45 chasing another Pectoral. The first bird was in the center of (2,3) unit (5x5 section) and flew to the corner of (4,2) - where (4,2) bids (3,2) in order to eject the other Pectoral, a distance of 7.5m. (foraging) For the same Pectoral: every 5 sec sample whether his head is in an up or down position (time = 1342): down, down, down, down, up, down, up, up, (making noise), down, down, down, up, up, up, up, up, up, up, up. At this point he stopped foraging to preen, so I stopped sampling [Total: 9 down, 12 up]. Within the sampling period the bird was foraging; between each sample his head may have changed from up to down several times. 1440 - just finished second sample of 3A and 3B. Shan the definite uniqueness that in 3B there are a slew of territorial Pectorals, spread out ~1/25x25m unit. I can hear territorial call (at least what I think is); [illegible] a typical crump note emitted with the much exaggerated bill down, just before flying a supplant. Watched 2 supplanted: the second one > 300 (1.5) unit, started from (0,1) had wandered in a J-shaped path to (0,1) - distance of over 10m. Another individual: one landed in (4,4) and one in (7,2) [illegible] & started [illegible] - I could both hear see noise-maker. The intruder around closer. The noise-maker spread his bill wide (couldn't hear call), flew toward the intruder, and landed where the intruder had been (also flew curvey). To see that flew away. I think is territorial in (4,2). Following this interaction, the (4,2) bird began feeding and moving away from the site of the interaction, remaining very alert. The supplantor continued to move toward (4,2) but stopped short of reaching the bird he had before chased.
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JPMyers 1973 Calidni melautas Grid 9 (Farmhouse Puddle), Estancia Weedland, 35 Km S of Juancho, Provincia de Buenos Aires, Argentina 20 December sampling Piedtail head positioning, solitary bird (0620) Down, Down, Up, Down, Down, Up, Down, Up, Up, Up, Up, Down, Down, Up, Down, Down, Up, Up, Down, Down, Down, Down, Down, Down, 15 down, 10 up). This bird is not within the vicinity of any other piedtail (minimum of 20 m); I have seen no interfering by it with others, and thus cannot guess as to its status. at 0900 birds coalesced into a large flock due to human disturbance - Piedtail collected (39) in the 1,0 area, 0920 followed one Piedtail for feeding data (head position) Bird in a Flock: Up, Down, Down, Down, Up, Down, Down, Up, Up, Down, Down, Down, Up, Down, Up, Up, Down, Down, Up, Stopped feeding. 11 Down & up 23 December. Distribution of piedtails in grid today different from that of 20 December; sharpest difference is that the lack of any numbers in the (3,-)'s today. 12/20 many were feeding in (3,0), (3,1), but today almost none. Instead they are more concentrated in the century the grid. The difference is element certainly due to the fact that the (3's) are essentially day to day, whereas before they were surrounded by water. Many flocking Piedtails present today, in fact there appears to be a cohort of noticeably fewer individuals engaged in any significant amounts of aggression. Time of day? A large flock? There are many more birds today - inverse dependence of aggression density? However there are a few birds that are foraging solitarily - enough work they may reveal space overhead again. 2000 many Piedtails still on Grid - do they sleep here ? Grid 1 (Farmhouse Puddle), Estancia Medeland, 35 km S of Juancho, Provincia de Buenos Aires, Argentina 24 December 0550 - signs of territoriality in a Piedtail - in (0,1) (0,2) region (I failed to pick him up in the first grid count after morning because he was just reatch the grid) - watched him Supplant another Piedtail at 0549 - now again, another bird flew into wonder of (0,2) and (0,3) in middle - he chased it away. Many of this birds feeding efforts are directed at the small clumps of diet shelleyout above the level of the water. Beside him is a wet asking tillorial - in (0,3), (0,4) region chasing other (w.k.) out of (0,4) and (0,3). They Two possibly intraspecifically territorial birds are feeding together - within 2 feet or less from another. Some any sort of aggressive demonstration. 0555 this Piedtail in middle
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SP Myers 1973 Calidris melanotos Grid 1 (farmhouse Puddle) Salamia Medland, 35 Km S of Tavacho by road, Pucia de Buenoitere, Argentina 24 December cont'd 0745 Pedocal in (3,3) just chased (4,3) bird, which flew left bank a bit further away in (4,3). Also (1,1) Piedford chasing another bird out of (1,1) into (3,2) 0805 ped in (0,5) & (0,2) with ~ 5 m between them. Both feeding. 0817 - watching bird ceased, then chased (0,1) away by flying to it in (0,1). Just flew at him + churned. As is frequently the case, it seemed to me that the birds just were hanging low when he flew in supplantation. It was a "helicopter" flight, + the feet are quite prominent. 0905 - as far as I can tell the Pedocal with the 4,2 stake as an activity center has a territory extending to the middle of the (3,1) block, to part the (4,4), to (4,0) and to (5,1)-(5,2). 0910 he supplanted a bird in (3,1) in lower left hand corner - he chased it & as I watched the bird went part (3,1) grid units 5 x 5 m Total grid 25 x 30 m 26 December 0620 taking following data on Pedocal. Near Stake (4,2) attacked a Pedocal intruder bird that had wandered over from (4,3) unit. The attacker had been preening on our site for 5 minutes when he went after the intruder. The chase included 11 successive appulanta- tions, ranging from (4,3) → (4,0) → (0,0) → (4,3) → (4,0) → (4,8) → (9,3). I was able to record the site of aggression fairly accurately on a grid map, and calculate the distance to be on the order of 95 m in less than 1 minute. The distances were all flying, except for the first approach. The final interaction brought the (0,4) area Pedocal down. The bird that has been being chased left the grid, and the (0,4) chased the chosen back toward (3,2). The overall shape of the territory of this bird (the 4,2) is similar to that of the bird described in the last 12/24 entry. 0635 (second sheet on site of aggression) - began 0635 with a Pedocal supplanting another in (4,3). This aggressive bird followed his object for some distance (12m) landing in (4,3) where it (the chaser) was chased by a another Pedocal from that region. came from (0,4)
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JPMyers 1973 Calidris melanotos Grid 1 (Farmhouse Puddle) Estancia Medeland, 35 Km S of Juancho, Pcia de B.A., Argentina 26 December cottled the original chaser It then flew, as the bird it had been chasing had returned to the (4,3) site, where this series had begun. The chaser again supplanted the introducing bird in (4,3). After doing so, it landed in (4,0) and immediately was chased by the lapwing, 0650-0652 - lapwings dive bombed a pectoral in (4,3); in order to avoid being hit, the pectoral practically dove into the water, hitting the surface with a splash. This is the second time I have seen this response to lapwing attacks: the more frequent is a quick stoop. 0655 pectoral aggression in (1,2): they are feeding but displaying interest; unintently. Outstretched neck, raised back feathers. The intruder(s) ended without supplantation, the 2 feeding within 2 ft of one another for ~2 minutes, then they slowly worked out away from the territory boundary. 0656: a series of supplantations began with one bird being chased from (1,4) [aggression suit chart #2 page 16] to (2,4) to (3,4) to (4,3) to (0,1). Each supplan- tation was done by a different bird! When the supplanted bird would land, the resident put its neck out, chinned, and flew toward the intruder, which then left. I think that this strongly suggests that there are at least 5 territorial birds on the grid. The occupant at (0,1) has a huge territory controlling almost half the grid [this bird whom I've described several times earlier, whose territory goes over to (4,2) etc.] I have the impression that most of the obvious aggression that I am seeing on the grid is between resident birds and transient birds, rather than within members of the territorial population itself. Usually these encounters end with one of the birds leaving the grid area. However, taking following data I have begun to catch a more subtle interplay between the birds as they become closer to one another, feeding or territorial. The behavior in this case often involves much feeding, and a slow parallel (but separate) trend in movement along what may be boundaries. Neck stretching is common, as is: When the birds encircle into a WR-like closed pattern with back feathers raised. Birds flying in a chase off. Occasionally, neighboring territorial birds wander substantially into an adjacent territory. They are supplanted, and fly back to their territory. The number of acts of aggression taken this morning are interesting in that, the intruders are certainly not evenly distributed over the grid. There are several centers, centers, and most of the aggression occurs near what may be a perception of the boundaries between territories are. Units (0,3), (1,4), and (4,3) are particularly
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JP Myers 1973 Calidris melanotos Grid 1 (Farmhouse Puddle), Estancia Medland, 35 Km S of Trencho by road, Pcia de Bs Aires, Argentina 26 December notable for the frequency of Pectoral interactions, among them containing more than 50% of recorded acts this morning. The correspondence between sites of aggression recorded today and manipulation from 24 December of the territory of the (3,2), (4,3) bird (see map 24 December) is particularly striking, and suggests either that the same bird is involved, or that microtopographic features in habitat are very important in determining territorial boundaries as both. Because of rain, which made observation impossible, I left the grid at 0730, returning at 1400. Rain during that period exceeded 10 mm. It was raining when I returned. I was struck by the fact that 2 pectorals, one in (4,6) and another in (1,2) were flying away from the pond and in grasses. Is this a response to rain? @ 1425 - two pectorals in lower right hand corner of the grid are not behaving territorially as far as I can tell. Both feeding, quite close. @ 1433 rain stopped. 1436 first case of territorial interaction among pectorals. In fact I am surprised by the lack of any so far. @ 1437 a pectoral chasing out other in (1,0) where I had noted none territorial once before. Is it one of them, changing its behaviour? Has someone returned? It appears to be related to the rain, as the cessation of rain has been followed almost immediately by a resumption of territorial activities. Is this related to my observations above of birds feeding in the grass? 1440 territorial behaviour in pectorals in (3,5). 1515. One very definite contested area in the middle of (0,1) unit, between a diagonal between (0,1) and (3,2). One of the birds on which I have following data (1445-1715) controls the lower half of the diagonal appears to control the upper half. 1720 fighting again. The bird of the lower half drove the other up. 27 December On grid at 0600 Did not sample. @ 0700 so far have seen a number of territorial interactions in Pectorals, in particular the area in (1,5) - (3,5). There is a bird whose territory extends from (8,0) pond above (3,5) - at least 10 m to 5 of end of grid, then it curves around including (3,5), (2,5), (2,4) and perhaps into (1,5). Another boundary near (1,3) stake, another almost certainly near 1,6 stake, Pectoral above (3,5) area inhabiting. In (3,5) a Pectoral has come over from (1,4) + is "fighting" with the Pectoral that was already there. They are head waving at one another, almost touching their bills and poking at
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SPMyers 1973 Catitris melanotus Grid 1 (Farmhouse Puddle) Estancia Medeland, 35 Km S of Juancho by road, Pv 27 December (contd) a glance in a fashion such that I believe he had intruded upon the territory of the resident. 1330 comfortably I have confused the two fledged birds while trying to follow a WR at the same time, they are still feeding as before (1330); I have continued to watch the same pair, now in the (0,1)-(0,2) region (one in (0,1), the territorial in (0,2)). While watching them I have been forced to wonder whether or not it is actually a territorial system - but then one is definitely agressing against the other, and he is doing so while staying quite inside of his territory, i.e. between (roadward) the center of the territory. This bird has been moving along, staying between 2+3 m from the other. [Loops - lapsing aggression, both birds clicked very low, one flat against the water] occasionally, as far as 5m away, and now they are moving 3. 2. 1. 1 2 apart. The upper bird is heading back toward the center of its territory. All the behaviours I have seen are consistent with the hypothesis that the upper bird was working the lower one around the territory boundary. Attacks only occurred when there was too frequent passing. 1354 two attack on the 2 birds, first after (0,1) then (0,2). (0,1) flew to (3,1) and (0,2) to (1,5), this is very consistent with the hypothesis that both birds are territorial, as today I'd already determined that (0,2) foraged extensively in the high (0,n)'s and (1,n)'s, and on previous day that a territorial bird with (3,1)-(3,2) as an activity center (and + place for preening etc.) foraged as far east as the low (0,n)'s. The first swoop of the two missed the (0,2) bird because it flanked down on the water. There are 2 more fledged birds that are typically on the grid: one is mostly off, running S from (4,5) and (3,5). The other runs (4,8) and adjacent area just off the grid, running to (5,1), (6,1). These are now (1705)
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S.P. Meyers 1973 Calidris melanotos Grid J (Farmhouse puddle) Estancia Medland, 35 Km S of Juancholey road, Pcia de Bs. Aires, Argentina. 4 December (cont'd) 3 non-territorial pectorals in upper right hand area of grid (1,5)'s. (Are they the 3 that left earlier?) Why aren't they supplanted by the resident? [Aside - watching them forage; it occurs to me that their sites of probing - when they stick their bill - are along different from those typically used by WR. If I had to guess now what diminutive Pectoral WR separated here, one would be microtopographic features at the habitat: Pecks use mounds that stick out of the water indoor mats of grass just above the water line, whereas WR typically probe in water. In a place like this grid, where the walking action has created a myriad of molds + corresponding mounds, this means that the two species can forage side by side + get still use different sites. What role does the WR tongue musculature play?] 1420 If it is a territorial system - defending is not perfect. Those 3 birds had been on what was a defended area ~2 hrs ago for 20 min. The defending bird is about 20 m away. The following explanation is possible: the defending bird normally uses an area which is predominantly off the grid to the S, with some extension into the grid. However throughout the morning + early afternoon a S. lapwing was chasing everything away from the shrub in ~ from 10 m S of the grid to 50 m S of the grid. Thus the bird's territory was not all available to it, and it made an extension to the opposite side. When that S. lapwing has ceased to chase in that area, after returning, called me birds in an area no longer defended by the territorial bird. 1450: Pet landed 0.5 m SW from stake (4,2), just beyond "island" on which the (3,2) bird typically perches. The (3,2) bird (which was present) immediately arose, stretched its neck, and started walking rapidly toward the landed bird, picking at the surface. It seemingly fed like this until within 3' of the landed bird, at which pt. it ceased velocity movement. This neck outstretched, in an angle almost but not quite horizontal (but with it held out off the direction of motion): Note that the direction of motion is not directly toward the bird being supplanted the other bird flew as the supplantor reached reached within 1' or so of it and as the supplantor churned. But the individual flew only a short distance, and the supplantor followed.
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SP Myers 1973 1974 Calidris melanotos 1974/01 Grid 1 (Farmhouse grid) Puddle Entancio Medland, 35 km S of Sancha by road, Alicia de Bo Arias, Argentina 27 December (cont) Immediately the intruder flew again, this time to just off the grid in (4,1). With the supplanted bird followed it, but landing in (4,0). Between the two was an ~ 1m 'channel' of open water without any vegetation, and a low break in the habitat. The behaviour of the intruder changed. For a moment it immediately started to stretch its neck out. They have now been sitting there for four minutes. I interpret this as the supplanted bird having crossed the limits of its territory, and the two birds are sitting on opposite sides of the border 1459 - 8 minutes since arrival and they are still sitting. But now (1459) both chased by trio. The (4,0) bird responded to the first two pairs with a subtle dip of the knees. 1501: after being chased by the trio the (4,0) bird flew to (3,1), then immediately moved to supplant a bird in (3,0). But as it moved towards this intruder the trio came again, causing the intruder to leave, and fly (4,0) bird to go to (4,2) where the original interaction (previous page) had taken place. However in order to avoid the trio attack the bird first had to hit the water flat with a splash. 1501 (4,2) bird (same as (4,0) except?) chasing out of (3,2). Appeared twice, the first - very subtle supplantation in (3,2) with the supplanted bird fleeing in (3,1): Each bird was ~ 1m from stake, on opposite sides. The intruder started they were hassled by the lingering, and had been crowding for ~1 min. Then the bird in (3,2) stood toward (3,2) stake. At that point the fleeing bird stood up + stretched his neck, bill pointed down. The (3,2) bird turned immediately. Then the supplanted bird started to feed + the (3,2) bird headed toward (3,2) -> (3,3) line. (3,1) bird (dark) walking towards it (if - the supplanted bird?) moved about 2 ft, + then the supplanted bird hopped at it. At which pt the supplanted bird went past the (3,2) stake. Also 30 December refted in Grid 1 att during early dawn (arrived on grid 0500). Peckers not detected until late in the dawn (0442), well after the circling dawn had become obvious and after hearing CR and Goldens. No Peckers banded, although I walked off a bronze off the net. 1 January 2 Nelson Grid 1 - up by 0415. 6 Peckers secured active snatching bearing first one at 0405. Banded 4 Pectorals: USF+W #2 bands [812-02802 - 05] and other color bands (see banding schedule). Weights ranged between 55 and 71g but unfortunately weights were lost because the tape recorder wasn't on.
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5 Pillagers 1971 Calidris melanotos 03 10 January cont'd Rte 11 Pond at Farnhouse Rd, Estancia Medland, 35 km S. of Trencho by road, Ptdo de Madariaga, Provincia Bs. Aires, Argentine Birds were preening. I suspect that at least two of them had applied from other territories nearer to where I parked the car. Anyway - when the chasing bird followed the chased across the road, we were left with only 2 preening birds, both over a 1' rise + several feet from the edge of the shore. A short time later, they flew off. Then, in 15 minutes a Peck flying, began fraction + interlacing with the WR. 1630 another Peck flew in during the first one was in the E' most reach of the spit, + I could see it regard to the landing bird's noises (which landed N 5 m W of the mouth). The first (A) flew over, as it flew the other retreated slightly, approaching the car a bit more. B then stayed crouching perpendicular to A, + the supplementary which had expected did not ensue. Instead, a bout of display, ending with A returning to its stretching and B feeding along the edge of the pond beside the car. The displays entailed head bobbing, neck stretching, crouching, back feather ruffling. Quick bursts of feeding were interspersed. The original approach by A was helicopter flight. 1635 - both birds flew down (N) the pond ~ 50 m. then I lost B, but A landed down flat, + then began working fairly rapidly back S along the E side of the pond. 1638 he was preening, when another Peck appeared (it was supplanted in turn by A). A then returned to spit. This was followed by 2 other Pecks flying by + cheering. As they flew in, A emitted a new sound (i.e. one I hadn't heard in Pecks before) - instead of a churr it was more staccato, about 2 sec-3 sec in duration, several times repeated. Both birds landed on the territory, A flew away to upper reaches of spit; stood there with neck stretched for 30 sec. A then flew at neck of the intertorors, which flew (the other followed). The first of these flew down (B) to a spot where A had flown before. The other followed, landed, + was chased by the first one. Just after this, I thought it off, chasing A made the first chase, involving churning, the chased bird flew over B, and was again greeted by the staccato call. Finally, after the disappearance of the other two, A started hounding the territorial WR ("A") - c/asing him for 3 or 4 sec. 1645 collected A (065) - a juvenile male (borsa). Tower House, Estancia Medland, Ptdo de Madariaga, Provincia Bs. Aires, Argentine 18 January 22 Red-breasted Plovers in multi-species aggregation noted on Homaio in 1st 185% Now are feeding (8 preening, 14 rioting). By 1920 they had been swept depleted by a herd of sheep. Not found again.
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J.P.Myers 1974 Calidris melanotos Tower Llanos, Estancia Medland, 35 Km.S. of Juancho, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina 20 January 0625 Pectoral landed just within 15 m of grid. - foraging in cowpots! - poking bill. Stays ~ 1 minute. 20 February at east end of flower in swamp wetland explored previously, and where there had been melanotos before on week before (see 12 Feb Journal). Pablo (cameraman) searched diligently for melanotos, finding only one (by sound), yet the habitat still looks reasonably good. And other birds up, fiscally, are roosting there. 22 February Sat in blind in swamp for 2 hours, saw/heard 3 pectorals - could have been same one flying by several times 23 February Sat in blind in swamp for 3 hours - no pectorals 5 Km N of Tower Llanos Swamp, Estancia Medland, Ptdo de Madariaga, Provincia Bs Aires, Argentina Shown in journal, found & collected one Pectoral (089) in flock of WR. Feeding in black mud with 2 other sandpipers. Body molt. Tobias Arroyo Chico, Estancia Medland, Ptdo de Madariaga, Provincia de Bs Aires, Argentina 25 February 1 pectoral flew over tower at 0910 27 February picked up Pectoral in leisure grid sample on subunit 1, in mixed flock (w/ buffle). 28 February Pectoral observed in leisure grid during sample. 5 March Rk 11 Pond, Estancia Medland, Provincia Buenos Aires, Argentina 6 Pectorals, in 3 separate groups, seen along road 11 p.m. mid-morning. Collected 1 (095) Largest group since returning from Paraguay. The collected bird was a juvenile - 2nd wing feather only by the opening, no large coverts remaining. 3 (possible 4) crown showing signs of development. Body molt well underway with many partly grown feathers 7 March 1000 came to Rk 11 pond to collect without luck. After first shot, which was unsuccessful, the 4 birds were too wary. Did withdraw before shooting, one appeared territorial supplementation. A skipper flight. 13 March 1600 - 5 pectorals on pond. Collected 2 (111). All pectorals observed were foraging solitarily.
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JRMyers 1974 Calidris melanotos 25 Km S of Clorinda by road, Pucia de Formosa, Argentina 3 August 6!! six pectorals flying south into a S wind at about 10:30, flying at a height of [illegible] meters. today is the first day of S wind for our 2 weeks. In fact, the last 2 days have been clouded by very strong W winds. The pectorals did not continue in a S direction, but after a few minutes began circling, and finally they flew W out of sight away from the road. They were not acting like birds that were accustomed to that area — rather that they'd just arrived and were exploring. Whoopee. 40 Km NW of Victoria by road, Pucia de Entre Rios, Argentina 13 August at dawn found pectorals foraging along the edge of vast river-swamp systems, in an area muddled by cow prints, creating a mosaic of mounds + valleys just larger than the birds body. The Pects were concentrated in an area where there were considerable Indian weed, + reeds worked into the gilled substrate. Very spooky, no sign of intra-specie aggression. Estancia Medaland 35 Km S of Tucacho by road, Pob de Madariaga, Pucia de Bs. Aires, Argentina 23 August Pectoral habitat dry - absolutely (see journal 22 August). But at 11:30 found 3 Pects foraging in a shallow spot in the middle of the Arroyo. Promptly collected one. (45) 6 Km NE of Farmhouse, Estancia Medaland, 35 Km S of Tucacho by road, Pucia de Buenos Aires, Argentina 25 August # a fantastic stretch of pectoral habitat (see journal). When we first found it at 15:30 there were only ballinago. But at 16:30 a flock of 10 pectorals flew by as we were beginning lunch right in front of the 2nd Windmill. The pect's turned, flew downstream (SW) 150 m, turned again, whirling up past us. They continued moving back + forth, touching down every few minutes but taking off immediately. They finally landed in the driest (i.e. no surface water) area, stayed alert for 15 min, and then began feeding. The flock remained fairly tight on the ground. We watched them feed for 10 min when another flock of 7 flew by, then on the ground flown up + joined them, and then the 17 came down + landed where the others had been feeding. Within 2 mins they bolt off. No interactions with either the ballinago nor the Vanellus which were nearby.
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JPMyers 1974 Calidris melanotos Estancia Medaland, 35 Km S. of Juncha bay road, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 31 August 0845 collected one Piedtail foraging along Arrayo Chico in (713) with a baird's. (199) Estancia Medaland, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 26 September see flocking accent re. multi species roost
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JPMyers 19721 Calidris melanotos (11:8) Arrayo Chico, Estancia Mcdaland, 35 Km S of Junincho ley road, Pto de Madariaga, Provincia Bs As, Argentina 5 October melanotos flying over at 0745 molting secondaries
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J.P. Myers 1974 Calidris canutus 01 (15,27) Arroyo Chico, Estancia Medaland, 35 Kms. of Juancho by road, Ptdo. de Madarina, Provincia de Bs Aires Argentina 8 September 1150 found knots for first time on Medaland, see grid 11, today, noon reading. The flock of canutus contained 35 birds. They were foraging well away from exposed mud, within the Arroyo, standing as deep as their bellies in 12.0. Very tight flock. Collected one. (156)
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JP Myers 1973 Micropalama himantopus 300 km W of Viale Hayes at lagoon by retire, Dept Pres. Hayes, Paraguay Aug 30 stilt sand piper flew in w/a group of greater yellowlegs at 6:55 while I was watching a melanotus. [illegible] slightly smaller than GY's, legs greenish, bill slightly larger, tail clear white. Kept in group of yellowlegs while feeding Mouth of Canal 7 into laguna Mar Chiquita, 22 km W of Mar Chiquita by road, Pucia de Buenos Aires, Argentina 17 October I finally got a good enough look at the odd birds today to be able to ID them as Stilt Spiders. 10 of them foraging in very close groups 11 November Two flocks of Stilts in pond just W of mouth of Canal 7. ~20 all told. Again, the tightness of their flocking so impressive. And the crazy erratic flight! Farmhouse puddle, Estancia Medland, 35 km S of Franco by road, Pucia de Buenos Aires, Argentina 24 November 13 Stilts foraging in the puddle at the far Send from the road. Their heads are always down. They are very close to one another. No aggression with nearby Peafowl. 16 December Molino Grid (#3), 500 m N of farmhouse, Estancia Medland, Pucia de B.A., Argentina Not on the grid, but in the major swamp 100 m W (and past a row of bunch grass) I spotted 3 Micropalama with a flock of 6-L Vlugs. They caught my eye first because of their tight foraging group and feeding style, and only later did I recognize them as Stilt Spiders. The 3 birds were almost facing each other in a tight triangle, less than 3 ft apart from one another. Grid 9 (Farmhouse Puddle), Estancia Medland, Pucia de B.A., Argentina 20 December Took feeding hood position data from one of two Mice's foraging close to blind on grid; sampled position (down or up) every 5 sec: Up, Down, Down, Down, Down, Down, Down, Up, Down, Down, Down, Up, Down, Up, Down, Down, Down, Down, Down, Down, Down, Down, Down, Down, Down, 19 Down; 4 Up 0815 watching feeding technique again: the bill is almost immersed in the water between the base of the exposed salmon and the front end of fly eggs. They do go so far as to stick the egg into the water
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JPMYERS 1973 Micropalama @ himantopos Grid #9 (Farmhouse Puddle) Estancia Medland, 35 km SE of Juancho by road, Pircia d B.A., Argentina. but typically it is not so far. Legs are submerged to the top of the tarsus (the joint at little beyond) sometime all the way to the base of the legs. More than one instance of the birds pulling their entire head and neck in water. Feeding motions are a rapid series of jiggles - a sewing machine type, with the bird bringing whatever he catches up. I can see frequently that when he raises his bill after a prolonged probing, the bill is slightly opened, as if it contains something. They appear to tot areas with a few probes, and then concentrate. [aside - head scratching done without going behind wing] in an area for 5 sec or longer. The twitching motions last only a second or so. While probing, the birds yield up when ~FYL gives call. Grid I (Farmhouse Puddle) Estancia Medland, Pircia d B.A., Argentina. 29 December 0737 - 2 stills flew in with one LYE (???) to (1,2). The LYE from (4,1) supplanted the new LYE but did nothing w/ respect to the Micros. 0750 Slipping chased birds out of (2,0) (3,1), (1,1) (1,2) (1,0) area. One Mino stayed, one flew to (4,3,4) The birds began feeding shortly, each one alone, and continued for ~ 2 minutes then the (4,4) started calling an arch arch (little less or probably), and the @ Micro in (1,2) flew to join it. They are now foraging together. (happily). 26 December 22 Micropalama foraging on grid when 2 came at 1420. 1515 - first aggression that I've seen among Micros. A still in (20) unit is chasing other birds that come within an area of about 80 [illegible] (perhaps 2.5). First behaviour of the aggressive bird upon approach: upright posture (from typical feeding stance) accompanied by vocalization crack - crack (different from flocking call described 24 December) with bill opened wide. Then it chases them off by running at the other bird in a straight line. 1530 - Has been continuously chasing other birds from area. Appears to be independent of distinction between individuals, but rather space specific - i.e. territorial. (BUT currently this is not true). However now the bird appears to be drifting off with a group. 1750 - in exactly the same location there is another Micro (perhaps same one) that I must call territorial judging from this response to other Micros. He is in a fixed position in the center of (3,0)
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JPMYAS 1973 1974 03/01 Microplana himantopus Grid 1 (Farmhouse Puddle) Estancia Medeland, 35 Km S of Juancho by road, Provincia de Bs Aires, Argentina not allowing other Micro's to approach within 2ft of him. Field observations. But it is not solely a distance phenomenon, as the absolute rather than relative spatial position of the attacked birds appears to be the determining factor. This is in great contrast to individuals that are foraging in the nearby flock, moving randomly with respect to one another, their positions in space clear, without any significant aggression, and certainly without the vocalization of this individual. Actually within the flock there are other birds behaving similarly, but they are quite different in behavior from the flocking birds. Mouth of Canal 7 into Laguna Mar Chiquita, 21 Km N of Mar Chiquita by road, Ptebo de Mar Chiquita, Provincia de Buenos Aires, Argentina 8 March just because they haven't been on Medeland for the fact several months does not mean that Microplana himantopus disappeared from Argentina. Found 30+ there this morning, collected 2 (106,107). Both 07juv, very heavy fat, just beginning to come out of basic plumage. 21 March several hundred Micro's in flock of 5000+ WR, foraging about 750 m N of the mouth of canal 7. Tower Llanos Swamp, Estancia Medeland, 35 Km S. of Juancho by road, Ptebo de Mada - riaga, Provincia de Buenos Aires, Argentina 24 March 15 Micro's in the swamp foraging in 2 small groups along with WR's. All they were largely commuted. Mouth of Canal 7 into Laguna Mar Chiquita, 21 Km N of Mar Chiquita by road, Ptebo de Mar Chiquita, Provincia de Bs Aires, Argentina 28 August 15 Microplana foraging in typical tight flock (at times all within 1m radius of one another) along the edge of the mud flat (see map p66). Most are in winter plumage, in a few a hint of the breast pattern remains. One has an absolutely mottled foot. See journal 23 August for water condition on Medeland.
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J.P. Mayers 1944 Micropalama himantopus 02 (10,13) Arroyo Chico, Estancia Melchior, 35 km S. of Juanico by road, Pto de Madariaga, Provincia Bs Aires, Argentina 5 September 2 Micro flying overhied at 14:40. called. [illegible]
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J.P. Myers 1973 Tryngites subruficollis baying (BZAN) 0.5 Km S of Trans-chaco highway on driveway to Juan Zalazar Dept Boquevón 320 Km N.W. of Villa Hayes, Paraguay 3 Sept mid afternoon had stopped at mud flat-pool to look at flock of golden plovers when 2 buffies flew in. landed well away from plover congregation along the N edge of the water. both birds stayed fairly close to one another + to the interfac between mud and water. I was too anxious to get specimen to allow them to forage much. Collected both of them. Corai, ~20 Km NE of Trans chaco highway, 320 Km N.W. of Villa Hayes, Dept Boquevón, Paraguay 4 Sept 1630 drove up to Corai after visiting Campo Flores. While passing a represo + 400 flock of sheep 2 buffies flew past landed just out shaft right. Part of party was too in a hurry to get back to Salazar so I couldn't chase the birds. Quick glance w/ binos revealed at least 2 more buffies (c. short grass) foraging in a well grazed field at least 100' from any water, too far for any details. I think I saw 3 or 4 others closer to water but distance was too great. I was pleased to see that buffies are so recognizable in flight.
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JP Myers 1943 Tryngites subruficollis 02 Estancia Medland, 35 km S of Tucumc by road, Pcia de B.A. Argentina 11 November Ah! - the buffies are still here, and in numbers. we are stopped by the road at the site where I found them in quantity last month, and can see 100+ from the fence. The grass has not grown much in height, but it looks rougher - weeds are sparsely poking up + the thistles are higher. 22 November Whew! again. On our way to Maule Plata to get permission to work on Medland. Stopped at same site for a final check on the birds, and they are still here. 35 km S of Tucumc by road, Pcia de Buenos Aires, Argentina Another buffie (buffalo) haven on E side of road. typical habitat. several hundred visible off to East. 23 November Canal 5 + Rte 11, Pcia de B.A., Argentina 1 positive buffy picked out of huge flock of goldens flying south over canal at dawn. Rte 11, between Estancia Medland entrance and Arroyo Chico Bridge, 35 km S of Tucumc Pcia de B.A., Argentina We stopped five times between the entrance and the bridge. At 3 of these stops I was able to pick buffies out of the fields - not many, never solitary. Also some flocks seemed to fly west near a marsh. The birds do not appear at all uncommon in this area. Farmhouse road from Rte 11 to Farmhouse, Estancia Medland, 35 km S of Tucumc by road, Pcia de Buenos Aires, Argentina - 7 oct 17 Fewer buffie visible along the road than last time. A few stops during the 1st Km, then one small flock by the bridge over Arroyo Chico, and another small one just on the other side. None further on. Was the view from the road misleading?? Arroyo Chico, from Bridge Farmhouse Rd (bridge to 2km N), Estancia Medland, Pcia de B.A., Ar From car while waiting out storm - watched buffies feeding. Several small (<10) flocks within 100 yds of car. Movements of individuals do not seem coordinated, get the flocks stay more or less close and together. When the hard rain hit the all left, yet returned before it had completely stopped. Will approach in 10' of car, but then start much raising, and wander away.
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J P Myers 1943 03 Tryngites subruficollis Arroyo Chico, from Farmhouse road bridge 2km W along Arroyo, Estancia Medland, 35 km S of Juancho, Pucia de Buenos Aires, Argentina. 23 November cont'd Walking along the Arroyo we found many flocks of buffies foraging in the short grass. They were generally small, with the birds fairly close to one another — as close as 1 or 2 feet. The birds allowed me to approach within 20' before flying off. I heard no vocalizations. They appear to be well along in body molt, and perhaps very small as well: belly is white (i), breast a dirty buff, wings have a definite white patch on the secondary coverts (I think). 21 November We continued our exploration of the Arroyo all the way to the bridge at 1k 11 today. Buffies were all along it. Many suitable areas for a grid except for the lack of elevation. 2km N of Farmhouse, Estancia Medland, Pucia de Buenos Aires, Arg. 1430 while out photographing I came across a flock of 30-40 buffies preening in a short grass field. Looked very much like the roosting flock of 60+ found at Whale Cove, Golf San Jose, Peninsular Valdivia (22 October). I watched them and photographed from the roof of the Citizen until too dark to see 2045. The preening did not continue — after a while the birds started to feed again. But then, by 2015 approximately, they were roosting. As far as I could tell they did not fly before dusk, and roosted there overnight. 25 November No buffies at "roost site" observed last night when I looked at 0530 this morning. Sun was on horizon. A few buffies feeding in a flock about 200 m to N. Arroyo Chico Llanos, Estancia Medland, 35 km S of Juancho by road, Pucia de Buenos Aires, Argentina. 28 November Scattered buffies present in the short grass fields here. The car (I am perched upon the roof; Lois is driving) has a definite spooking effect — spooking birds up to 30 m away, perhaps more. The buffies are less spooked than goldens. I still have not heard a buffy call when spooked. Because of the car, I'm not sure what to think of my impression this afternoon of the birds' dispersion — there are small groups spread sporadically over the llanos, more near the Arroyo than away from it. It stopped for an hour at the potential grid site, and eventually the birds came back, 4 or 5 always.
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Tringa subruficollis 09 S.P. Myers B F143 [illegible] 28 November cont'd Tower) Arroyo Chico Llanos, Estancia Medeland, 35 km S of Junincha by road, Pcia de B.A., Argentina visible on the little mesa (birds <1' high) just to the [illegible]. I get more of an impression of independence between birds watching their b ride forage than I have for buffl oos before. Tower Arroyo Llanos, Estancia Medeland, Pcia de B.A., Argentina 19 December Sampling Grid #4 saw first clear case of supplementation between buffl oos. Two buffl oos feeding in (0,0) grid (25x25 unit). Just after I began sample, and after recording that unit, one of the feeding birds flew at the other bird, a distance of less than 20m; this resulted in the bird being "attacked" flying off of the grid. Ran the grid twice. Now I am watching, and the spacing system is not at all clear cut. Frequently this morning, on the grid and around it, buffl oos are flying at one another, in something that looks like chasing. I can hear no vocalization, and it does not look terribly aggressive like a Pied-billed Gull. But the bird being flown at usually goes away. And the chaser will then follow. For example, one bird 15 m from tower that has, within last 10 , chased 2 other buffl oos away from this area. It remains feeding by itself. Now flying over again, loading, and flying at running at another bird, this time I may have heard a little sound just enough to decipher. Still flying - and ended in chasing other bird away. This sequence took ~5 sec, at spread over ~25 m. this bird is centering his activities just to the S of a patch of durangoillo. Again - another supplementation, this time ~50m away; the buffl oo flew the distance, with the bird being chased flying before the chaser reached his area. The chaser flew back to the center of his area. Then he immediately went toward a 3rd bird that had unbundled from the opposite direction E. This interaction was more intense, but unfortunately I did not have my binoculars on the birds. I say intense because they both made a series of hopping motions as if each other, visible from here only as a series of fast 6" or so jumps. Third (both birds were doing it). I have shifted my focus to another bird in the (5,8) grid, which flew from there with the (0,0) [25x25m] unit immediately at another bird, which then left. This is a distance of over 30m. And between this bird's original site and the bird he was chasing, perhaps slightly removed from being directly between, was a 3rd buffl oo, not chased. For the next few minutes
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SPmyers 1973 1974 Tryngite subaucticallis Tower Llanos, Estancia Weedland, 35 Km S of Junincho by road, Pcia de B.A. Argentina 19 December cont'd I was taking survey of grids in the Arroyo. Upon returning my attention to the llanos, I find a (probably the) buffy in the area where I had noted territorial behaviour. It had disappeared when several cows wandered into immediate vicinity 7 minutes ago. 0645 - just took count grid 4, noticed buffy acting up in field grid, in (32) unit of 25x25 area in grid 4. First thing I saw was a buffy running across field with his right wing raised vertically. E. Then another bird followed it, flying from the area from which the first had run, to the place where the first had run to, the running bird stopped when the second buffy landed and turned, & then jumped up and down, with wing movement, ~ 6 times. The jumps carried it at least 5 inches (between ft + ground) off ground, purely vertical. This bird then flew away, continuing in the direction in which it had been running. The jump carried some. 15 January 1840 drive onto llanos w/ Lois. Parked car ~200 m W of gate from fallow corn field. Sat watching 105 19 buffies with 1/2 girls (6 E) with 200m radius of car. Many of the birds are sitting in clumps of grass, on top of old ant hill or behind them or near Coupa, preening or resting. Others feeding (~30%) In same radius see 27 golden plovers, similarly engaged. Feeding rate data of buffy (tape 2 side 2) One of the birds I took data on flew into the vicinity of bird that Lois was watching. Another buffy flying at the same time, the birds intrusion produced effect on the preening birds: the first bird to fly in flew in straight walking towards the preening pair (B+C). B turned his body sideways (perpendicular to A), though did not mix from position even though A was within a foot of B. When A began to turn away, B lifted its wings, and jumped up/down, at which point C got up, lifted its wings + jumped up/down. B+C started walking hurriedly after A, which was walking South. Then the buffy (B) opened both of its wings facing A & held them open but cupped - like a parabolic reflector with A as the focus. (From above) B For the displaying bird stood upright with neck outstretched. However it did, the four of them (B+C, A plus other newcomer, D) are feeding within a 10m radius - all headed S (our preening). We have not traced which is which except for the fact that the one that has moved least away from the original spot is B the display. A made no obvious display in response to A. All four birds, plus nearby Golden, circled simultaneously. We saw nothing to break that. Within 45sec they were moving + feeding again. 1910 - birds widely separated now x 10 S -> [illegible]
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JPMyers 1974 Tryngites subruficollis Tower Llanos, Estancia Medland, 35 km S. of Juanando by road, Pte de Madaranga, Pteia de Bs Aires, Argentina. 15 January (cont'd) but the Sierra Southern most 3 continue moving together. B remains (or think it is B- as its general movement has been in the same direction but it is slow. He has moved ~ 30-40 m, the others ~ 70-80. 1915- S and 3 even closer now, B left behind). 17 January Less than 15 minutes after we cleared out a herd of cows from the immediate vicinity of the tower, a fixed flock of 50 birds (~ 40 WR + 10 buffle) moved in to the de-cow area. Buffles using cougiris on Llanos + on [illegible] card, but in the former habitat they were also foraging in the grass. by 0810 seen several instances of picked out several territorial buffles, both on + off grids. Began reading grid 4 at 0820. However I don't believe that by now (0820) there are as many buffles as there were when we arrived, or at least that now they are more spread out. 0915 - both L and T again are unimpeded by the greater dispersal apparent now - the birds have spread out both on grids + in drainage. 0935 - buffy appearing beyond (9,8) just outside grid - looks like territorial bird. 1035 - almost all the local buffles left following a golden call. We did not see any disturbing factor. During the morning we have been watching one buffle near the tower just above the chainage - it defends a small territory (continuous ridge, on the order of 20-40 m in diameter, perhaps less) against other buffles. Within its territory is a WR, also territorial intraspecifically. The buffle on occasion chases the WR - running toward it. This happens even though the WR does not flee. 0930 Lois started watching one Buffle across the chainage, ~10 m beyond the edge of the Llanos. It walked a transect: feeding on rooting, sometimes stopping to forage intensively in a small area, then continuing on in the same direction. At it walked back and forth ~ 4 times along a ~25 m route, turning regularly at the same spot. In its vicinity were other buffles, goldens, WR. It appeared that a territory defended area existed only in front of the
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JPMayers 1974 Tryngites subruficollis 03 Tower Llanos, Estancia Medeland, 35 Km S. of Siuancha by road, Ptdo dt Madariaga Pcia de Buenos Aires, Argentina. 17 January cloud bird and within a few feet on either side of the transect. Other bb's curled land behind or to the side, tnot get chased until they, the first bird had turned around. Chasing involved: raising + lengthening of neck followed by running and then if the other bird was far enough - flight. Land within: 1' or 6" of others. Also seen 3-4 times with other bb's (in 1.5 hr) and once to WR feeding on Corupie (even tho the bb did not then feed on the corupie). Once however wetter bb flew at this one with his beak on the "transect" - This one then turned around + continued feeding. But a golden cama + chased both buffins all. Wing flashes seen in this bird 3 times during morning. 18 January 0655 - buffy baffle - 15m N of tower. Branch jumping + wing waving. No vocalization. Ended with one of the birds being chased away. A buffin within ca 90° arc + 25m N-NE of tower. 0710 - more buffy aggression - in (0,0) bigunto, chasing off another bb. 0711 buffy recorded intact sample (0710) in (4,6) flew to edge of (3,1) (0,0) (4b) + displaced bird. The birds appear more to be much more dispersed than they were when we first arrived - it is too bad that I [illegible] wait till 0655 for the first reading - even tho! I think such a wait was necessary in order to re- move the after effects of our coming. 0713 been watching 2 buffins that came together near (3,6) - (3,3) again. One bird (A) definitely moving toward the other (B) rapidly - and slightly outstretched. Moving flasher just running toward. Very subtle displacement (if it were seeds), at least in terms of display rather than direct attack. I almost invariably kept on one side of B. When they have separated, without penetrating into the area A had been using. 0730. Displacement using wing flashes in (0,6) area. But the "displaced" bird just flew around behind the displacing bird, where the latter had just come from. A directional phenomenon on later has been observed yesterday? 0735 - another bb flight. Began with two buffins (a pair?) flying ~ 55 m (!) in order at other. A' had been crowding beside another bb in the center of the small unit. A' flew directly to the new bird, so as if he made the
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J.P. Myers 1979 Tryngites subroficollis Tower Llanos, Estancia Medland, 35 Km S. of Juancho by road, Ptdo de Maduranga, Provincia de Buenos Aires, Argentina 18 January (cont'd) buffle "burble" sound which I have begun to hear recently. After a brief tangle the two entered a classic calidridae crouch - back feathers raised, neck outstretched + held low (alternated) or preening). The attacked bird began working away - pecking, 45° angle flying from A' + combining a crouch. A' making a second approach (i.e. second attack). Now both are working on cowpips, feeding. But then in ~20 sec A' struck crowding again + then the fight began anew - hopping, wings are out, jabbing, fencing up bill. Hopping at one another. B' initiated this bout. Much vocalizing behind the burble (trill). More hopping - most by A', with B' jabbing from a crouch toward the foot of A'. The whole interaction has taken place over a 10 m radius area. In the attack the wings were held outstretched + fluttered especially during jumping behavior. Lois watching buffle on a ravine side (S) of drainage area from tower - she picked it up while it was working in the dirt at the base of the "cliff." It waded up cowpith who lones them, + has been foraging along the edge since 0700 (time now 0745). The bird walks repeatedly back and forth along the ledge, picking food off of the overhanging grasses (on ledge) + beside. In 45 minutes it has retraced same route 6-7 times, moved the team slowly. Twice it has in flight "pattered" the area (the limits of which appear to be well defined - 50 m wide on either side of ledge, 100 m long. Both length + width are defined by both the birds foraging sites + areas of supplementation. It consistently removes other buffles (and WR inconsistently + Correndera Pipits!). Attacked other birds either on foot or in flight. On foot it runs, holding neck stiff without actually touching it - but without the holding it low. Fast + directed run. In flight: will travel entire length of "transect" along ledge following WNR FLASH. - Flew landing within a foot of the intruder (seen twice). Also twice - flew across width, once to chase WR (stretch) neck very high prior to flight; flew + WR. Then returned to ledge, + repeated process to supplant a buffle. After all but one of the flights (4) it stopped to preen, preening different feathers very each time: 1) back+ wing; 2) breast; 3) breast; 4) tail. About 90% of time has been spent on ledge, with occasional forays down into drainage about 50 m away. Crouch seen: the ledge buffle flew 5 m
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JP Myers 1974 Tryngites subroficollis Tower Llanos, Estancia Medeland, 35 Km S. of Juaanco by road, Ptdo de Medariaga, Provincia Buenos Aires, Argentina 18 January cont'd in mb the llanos, chasing another blackbird: the latter (Q) moved a little, but the chasing bird continued the attack on foot, at which pt. both stopped + crowded, holding head low, back feathers raised. Both held ~15 sec before both continued feeding, Q going further away from ledge, + the ledge bird returning. As in this case, when ledge goes inland, it usually returns directly (feeding en route) to the ledge. 0865 Ledge bird stretched neck high + flew at another buffy ~ 5m beyond pt where L usually turns in its traverse near W end, + 3 m inland. The other bird did not yield readily, + both started hopping + wing flapping. 5 separate hopping bouts in a few minutes. Finally L [illegible] executed way down in grass, head low, without moving. Other bird could L 3-4 times, then walked hurriedly W, away from L + L's transect, + started to feed again. L then got up, ran toward other bird with head shift in aggressive attack. Both began hopping again, until L flew back to our territory, to spot from where L had initiated encounter. In these "aggressive runnings," the normal bobbing motion seen while foraging disappears - the head is held low and neck arched still somewhat outstretched (but not stretched). 0830 L still patrolling ledge. On our patrol a buffy on the opposite side of drainage (O), feeding along edge of drainage. L flew at him O, forcing O to fly. O went E along drainage. L followed, walking 20-25 m to within 5 m of O (which was then feeding, coming closer to edge of drainage). Then L walked into dirt area + across to "our side". An En route its pace became more rapid. When it got to base of ledge, it flailed both wings, and another flash + jump, causing a cob close by WR to fly (which may have been the object of the flash) + increased pace. As the WR flew L flashed again. Returned to Tower at 1700 after leaving at 1000 this morning. See journal for [illegible] description of curious dispersion pattern, 1819 first aggression in buffies on Grid 4. Watching 2 buffies in small (3?) quint. "A" came over directly from (5,2) without wing flash. Seems to be for- aging together. Began with, when A came up it half-jabbed, half-foraged
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JPMyers 1974 Tryngites subroficollis Tower Llanos, Estancia Weddell, 35 km S. of Juanico by road, Ptdo de Madariaga, Pro. de Buenos Aires, Argentina. 18 January cont'd at the feet of the other buffy, puffing its bill down to the ground. Action continued for several minutes, then they separated. Just then a carranola flew over, shadow crossing gird. Nearly all birds took flight, alighting near but not on, their original positions. I have the impression of "fussing" between the birds, but I cannot discern the source. Another interaction began 1850: "A ran towards 'B,' from a distance of 15 m. (happened within 5 m, and + they turned to face SW, paralleled + started the above "fussy" feeding behaviour - Will does not penetrate into grass as far as usual, merely touching the tops of the blades. Cont- rmed behaving like this for over a minute, working closer+closer together until <5' apart. At which pt A buffeted B upwaring. Wing flapping by A (wing next to B, did not open completely). They then separated, A heading toward where he came, B going away in opposite. In all the interactions between this pair in the last 3 minutes, A was the aggressor. 1855 - buffy has a favourite cormorant, 4a (0,2), has been working around that one for 10 minutes. But at 1855 a golden chard it off (and the golden com- menced feeding there). 1904 - Buff running fast to Won grid 9a 15 m behind I was another buffy (A above) following, running too. Did not stop till B was off 4a by 5-7 m. At which pt A stopped, turned parallel, and fed a little. Then A turned around + went back toward center of grid. then 1/2 min later a 3rd Buffy landed 2m from B, B then raised both wings jumped up or down (once), then the two of them began feeding 5m apart for 3-4 minutes. At 1910 - A in (1,3) when 2 buffy flying, lashing 15 m to S. As A landed, A immediately started running forward landing site. Second Buffy landed immediately in front of A (as it was running). A then pursued ↑25 m. to (2,1), then A went after, flying + chased. Chased. 1912. 5 buffies within 10x10m, moving north, feeding. 1914 A had on again near (0,5). 4 other buffies quite close together. Occasional every few days, but quite different from earlier spacing. New birds? or effect of time of days? 1920 - A supplanted again, this time from (0,5) area. Pore by flying individuals.
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SPMilers 1974 Tryngites subruficollis Tower Llanes Estancia McIldand, 35 Km S. of Juancho by road, Pto del Madariaga, Provincia de Bs. Aires, Argentina. 18 January (cont'd) Toward "offending" bird. 1923-25 cow walked through yard - no effect on buffleis. 1924 A' tolerated approach of other bird - nawk 20 m into territory. Came as close as 70 m to A. 1930 - buffle landed 40 m from A. A flew, landed within circle of said bird, causing "intruder" to fly 5' to NE. A followed intruder for 5 min with no further aggressive action but then began working back towards edge of area. 1940 - 107 buffleis within 200 m Two main groups, on near grid II + the other in EWE direction. 1949 - definite impression that buffleis are coalescing into smaller & smaller areas, forming flocks, diminishing territorial system. No aggression since 1930 despite close proximity of buffleis. No wing flapping, chases, etc. This trend was shown beautifully in the 2000 Grid 4 sample, when compared to other collie samples. This, despite the fact that the birds continued to feed. 20 January Buffleis not present in tower area when we arrived at 0515 (but arrived entrance ~ 0535). 0615 much aggression both on and off of grid, making it difficult to keep up with movements of the birds. Since 0600 a buffle has been maintaining a territory in 4b (0,0) [southern portion]. Within 11 minutes two supplanted 7 times - all buffleis intruding within its area. 0613 squad rushed at intruding buffle. In contrast to previous 7, this newcomer stood its ground; fight ensued. Reached highest altitude - 4'5" in air during hopping (why the height vary increases?). R then left vicinity, going to lower right (SE) part of (0,0). But 0619 R was pushed further by another supplanted buffle just (1,0). After 2 min R flew back into original area, supplanted a bird (the same one?) that was there. Area it is defending now is much larger than it was the first onset (it appears). Consistently chasing other buffleis away, but ignoring (R) 15 observations since 0605. 0630 - 11 buffleis between tower and 9.0 of 4b. 0651 Buffle landed + another buffle ran towards it, the latter bird holding up its left wing while running, the wing was held vertically [illegible] running. The other
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Tryngito subroticellio Tower Llanos, Estancia Medeland, 55 kms. of Juancho by road, Pto de Madariaga, Provincia de Buenos Aires, Argentina 20 January (cont'd) buffy continued surveying in the direction in which it had been flying, + the every-lifter returned to its original position. 0636 R is still controlling its area, in low central + right corner of (0,0) of 4b. Frequency of aggressive also appears to have decreased markedly in last 10 minutes. When there is aggression, it occurs in spurts: a supplanted bird containing gets chased, shoved into someone else's territory, + is chased again, etc. etc. this can cause 5-7 checks within a minute or two, then everything is quiet for awhile. It appears now that the buffies are following closer up around than before. Some ice within 1m of one another. 0643. R appeared for first time since before 0636. R moved somewhat to W. the bird playing within small area, feeding continuously. Not like "patrolling" bird watched 18 Jan. 0710 all local buffies within 25 m radius previously, but by 0714 they were fighting again + feeding. at 0710 there were buffies across the drainage were not ploving. 0718 - when 2 buffies are fighting intensely (hopping, jabbing etc.), & between the hops they enter a "pointed crowd" - necks extended, bill pointed forward other bird down towards but 6"-8" apart. We have seen "hoppings" lasting between 2 + 10-15 sec Lois watching 0722.- Grufio since 0700 has been patrolling drainage area cliff across from tower, similar to 1/18 bird. But this bird works both N + S sides, feeding in overhanging grass + occasionally wandering afewen from edge of cliff. Keeping away all other buffies + inconsistently chase WR. 0723 flew across drainage + chased bb on other side. Patrolled entire edge + lower parts of cliff. One other difference between 1/18 + 1/18 bird in their approach to the ledge: 1/20 bird jumps up for half flight whereas 1/18 only walked up, using ramp path. Suggests that they are different birds. A nearby aggressive golden plover has been hassling 1/20 with a grey bird infrequently. 0721 2 buffies fighting in immediate vicinity of tower; fighting again at 0728. the first frightened with them crossing (both). One remained in crowd 5 min. The other remained 2 min, after which it began feeding. Stayed within vicinity of the first bird. Occasionally 5 min bird would stretch hill out + flutter into fight against
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JPMycos 1994 Tryngite subbryficollis 09 20 January (cont'd) Tower Llamos, Estancia Midland 35 kms S of Juanico by road, Peña de Bs. Aires, Argentina The ground. This position was alternated with having the hill decked. During both, the body was flattened laterally ( instead of ). 0800 - 1700 bird (see prev page) has held ledge area of drainings for last hour. Apparent now that it is defending at least 15 m of Llamos also: 50m drainage X tower Kept at 400 birds off very consistently, usually flying at them. Chased 7 buffios + 3 WR in one hour. Although it considerably evicts intruders, "patrolling" is not so apparent as 1/18 bird in same position. Do not "marching up & down transect", but feeds inland, zigzagging up & down instead of direct march. Also have extension following data on one bird in 4a grid. time I = 0735 to time 30. At 0800 it ran Toward other birds from 4a (5,1) to 4b (0,0). As it ran it held its wing up running ~1.5 m in air, it up. If then stopped & turned the way, continued running, raising the right wing on the W side of (0,0). The other bird, when P reached the forest of (0,0), held its left wing reared for 7 sec, wavering the primaries up & down while holding the wing. Periodicity of 3 times in 2 sec. . Pretreated. 23 January 0710 - buffio territorial interaction in new grid (#10) at base of tower, unit (4,3). 0900 - see following data in Grid 4 book p 63. On at least 9 separate occasions during the 60 min of following data, another bird flew in, & the bird being watching, K, raised its wing before flying to supply plant. Wing toward intruding bird is raised, so that the intruder gets a flash of white. In (border clashes (with territorial neighbors), a very typical behavior is "mock-feeding" , in which feeding may be accomplished, but during which the tail is held down & tail feathers raised : . This is very obvious because a gap between the folded primaries and the lowered tail appears when viewed from the side. Quite detectable from distance. In the 60 min observation series
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JPMugus 1979 Tryingito subtruficollis Tower Llanos, Estancia Wedeland, Atibildes 35 Kms. of Juancho by road, Ptdo de Madariaga, Pcia de Buenos Aires, Argentina 23 January (cont'd) (0751-0851) I recorded 25 discrete acts of aggression involving K. All of them K was the aggressor. It appeared to us that there were 2 types of aggression - that against neighbors, a subtler interaction except during those times in which fighting occurred. I.e. the interactions are of 2 extremes. The subjects all forma were either tail-dragging (Huinack feeling I described before) or neck-rising. Perhaps croching occurred without any fights, but it was certainly more common with fights. Preening + resting on my also occur soon an aerial fight, but it is difficult to tell when these 2 activities occur whether or not they are some form of information, unless it is in the context of a fight + croching. Fighting was unmistakable, entailing hopping, wing waving + jabbing, interposed deliveries both of fighting is croching, + sometimes tail dragging. The latter particularly when one of the 2 is still croching. - the second type is that between territorial birds + "foreign invaders" - this typically begins with a wing flash as the foreigner flies by or in. Sometimes that suffices (the $ intruder does not land, or takes off in media- tely). We do see wing flashes sometimes without knowing to whom they are directed. If the intruder remains, the resident either runs or flies (usually the latter, no matter what the distance). Flight is peculiar, often in sideways (independent of wind) - similar to heli helicopter flight. Legs down, body not only sideways but 60 to 30 degrees off horizontal. [illegible] - neck + legs outstretched. Resident lands near intruder. By then, the intruder is usually either flying or running away. Resident follows it to decisive boundary, running with a stiff neck. Vocalizations during flight + run- ning. Chase can continue off territory, but this frequently degenerates into an intimate with neighboring bird. If the intruder does not fly, there is an in-flight airborne fight. (back to K-) K's area territory was of approx 12 units, or 300 sq.m. One area was used most continuously, viz (2,3), (3,4) 25 out of 60 minutes. Border fights were most intense in the (2,0), (2,1) (3,1) area. K also had a definite boundary in (3,4) See p 63 Grid book
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JPMyers 1974 Tryngites subruficollis Tower Llanos, Estancia Medeland, 35 Km S. of Juancho by road, Attilder Ptdo de Blas Macalaniaga, Pcia. de Buenos Aires, Argentina 23 January cont'd 0820 - briefly fly from grid 4 over grid 10 to past tower. As it flew over (4,4) of 10 the buffy there in (4,4) [which is frequently there in (4,3)] raised its wing + waved for a second or two. During the 0925 reading one buffy was chased by 4 consecutive birds on grid 10. Border fight between birds in (4,3) and (4,4) induced by the presence of the chased bird - 0926 border fight in (2,0) between K and L - (bird L has been following - Grid 10 book p5). Very intense fighting lasting 10 seconds then separated by 2-3 m and out for 2 minutes. Heads alternated between heads normal + heads tucked. Then L got up, began mock fording, started away but then jumped at K. Hopping fight for 5 sec then separated by same distance as before, went into crouch, remained as such for <1 min, then L flew over into (3,0). Lois this morning has followed 6 birds so far. (see pp 1-5 of Grid book 10). First flew after 10 minutes, second after 11,78 (fornorth of there 2 are counts of agg. available) 3rd left after 30 min - (in that time it chased others 6 times while taking flight) was never itself chased by buffy, but yes by golden (I) and S. lapwing (I) 4th left after 15 minutes: chased others 4 times, left when it was chased by buffy (2nd such event) chased 2 by Golden. 5th bird followed for 3 minutes, during which it chased other buffy once, but left when all birds took flight. 6th bird remained full sample period (one hour). During that time, it (4) was chased 3 times, and chased others 7 times. Activity strongly centered in (1,1), (2,1), (3,1) (3,1). Defended larger area - as far as (4,2) 11 units (~275 m2). Has a border with K (above) in (1,1), (2,3) (2,1) region. 0945 - I think that we are discovering that there is discrimination within between neighbors and non-neighbors by territorial buffy. During the 0940 #10 sample there were 2 buffies in (3,4), both preening one was K,
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J Phillips 1974 Tryngites subruficollis Tower Llamos, Estancia Midland, 35 Km S. of Sancho by road, Pta de Madariaga, Pcia. de Buenos Aires, Argentina 23 January (cont'd) It flew into (G1) to chase a bird that had just flown in. L was also in (G1), K rode me riding forward L. 1023 Following data on another buffy, probably K again (chosen because it was in the same area also frequented by K). As I took following data I also recorded the time structure of feeding behavior - jabs, wobble steps, + air following. Bird cir(34) of Grid 10 Jab # # sec since last jab (or eat) steps before jab 1 2 sec 1 st 2 5 sec 6 st 3 1 sec 1 step 4 — {2 sec — EAT — — 5 3 2 6 — {1 sec — 7 EAT — — 8 2 2 st 9 3 3 st 10 {last — {1 sec — 11 — — Eat — — 12 3 1 13 — {1 sec — Eat — — 14 — 2 E Bouch
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JPMycs 1974 Tryngites subbifocillus Tower Llanos, Estancia Medland, 35 Km S. of Juancho by road, Pto de Madaringa, Proia de Buenos Aires, Argentina 23 January (cont'd) Lois recorded following data on Buffy 1/23 C from 1000 to 1100, during which time the 1/23 C remained on or near the grid. This bird concentrated its activity within (3,4), (3,3) and (4,4), with some activity to the W of the grid. All but 13 of the 60 sample points were within the 3 units. Defended area calculated as 40 ~ 100 m². 1/23 C shared a boundary with K. In the hour, 1/23 C attacked appeared 7 times, without being chased by another buffy, although it was chased by Golden Ternice. At 1123 L finished a second set of following data on 1/23 K - probably K. 1/23 K remained on grid for the entire sample period. Activity center concentrated in (3,4) (1,4) (4,0) (order of maximum (ordered by % of sampled units, starting with max) (2,4) = 14 minutes; (1,4) = 7 min; (3,3) 7 min, (3,1) 6 min.... Area defended ~ 250 m. Border shared with 1/23 C - in same site as that defended by K - I am positin that there are K and 1/23 K' on the same grid. Therefore this buffy has defended the same territory 0751-1123, or almost 4 hours. It is unlikely to be the same bird that the lower border of K has retracted somewhat: in the 0751-0851 reading, K defended the 0, n -1, N areas entirely. However 1/23 K' has a border with another buffy in the (n,1) units. I.e. (0,0), (0,1), (1,0) and (1,1) are now in the control of another bird (which Lois followed from 1100 to 1200 [1/23 D.], 1/23 D. foraged principally in (n,1) and a bird almost certainly identical to L (above). However, 1/23 D did not remain for the entire 60 min. sample period, leaving after 51 minutes. Foraging concentrated in (n,0) and (n,1) units, especially the latter. Border as noted above with 1/23 K'. During 51 min, chased others once, by others 4 times. During the final minute of following data on 1/23 K', an extensive interaction between it and 1/23 D began. 1/23 K' chased D out of (1,3), flying a distance of 11 m. D flew to the lower part of (2,1). (2,1), ~ 5 m, and both birds watched, ~ 5 m apart, and have remained preciously
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JPMyers 1979 Tryngites subruficollis Tower Llano Estancia Medeland, 35 Km S. of Tucumc by road, Ptdo de [illegible] Madarina, Pcia de Bs. Aires, Argentina 23 January (cont'd) for 8 minutes. Preening alternating with bill tucking. At 1129 K' broke out of the pointin, and started to feed away from D. 20 sec later D' broke position. [illegible] [illegible] (1144: 1/23 K' in (0,3) of G-nil 10 at 1/23 C came into (2,9). K' came running over, stopped by (2,4) stake in middle of campic, squatting. C' turned around began more feeding back toward (3,4) unit, then it flew + supplanted another [illegible] (1150 (Lain) [illegible] watching buffle holding territory on grid 10 (1/23 D) & since 1000 [illegible] when at 1148 the wind walked off the grid and flew to [illegible] of 4 a. After 3 minutes three (i.e. 1,0 of 4b) it wandered to (0,0) of 4b + then was lost in the shuffle. No one has yet (after 4 min) [illegible] filled its territory. Mor by 1200 gird reading was anyone there, even tho 1/23 C and 123 K were present. 1343 on (2,2) on Grid 10: feeding time structure Tab # # sec between # steps between 1 3 7 2 2.5 5 3 2 3 4 — — 5 — — 6 2 2 7 — — 8 2.5 5 9 1 1 10 — — 11 [illegible] — 12 [illegible] — EAT — — cont'd
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JPMyers 1979 Tryngites subnifriollis Tower Llanos, Estancia Medland, 35 Km S of Juancho by road, Pto. de Madariaga, Provincia de Buenos Aires, Argentina 23 January (cont) 1435 - while taking Grid 10 reading I picked up a fight - possibly border - between 2 buffies. Both birds were crouched parallel. Particularly striking in one of them - leaned with body width axis (e.g. cross section) tilted so that the fan side [illegible] from the other buffy was higher than his near side. [illegible] birds facing up from page). It was exactly like a LWR posture which I have seen in border fights between LWRs. 1432 - a buffie that has been on grid 10 consistently during the afternoon, suddenly flew to the head of the drainage area, joining [illegible] other birds there preening in the dirt. 1515 they are still there. 1530 my eye was caught again by this group/birds when they showing white underwing started wing flapping. I looked up + saw 3 birds there. 2 were cupping their wings (described ). Both of these birds appeared to be focusing the wing cupping towards a 3rd bird (which was) with them, both. [illegible] [illegible] buffie [illegible] cupping [illegible] (from above). The other bird is definitely the focuser (both cupping) birds facing it. The cupping birds hopping a bit too. All of a sudden they flew. One returned to grid 10. This is the first bird on the grid since 1500. During the rest of the afternoon (until 1900) Buffie appeared on Grid 10 only infrequently. 24 January 0740 buffie landed on grid 10 in (3,3), immediately beginning to fight with other bird already present. The fight was intense. 1/24 B was not able to supplant it, and returned to original location in (3,4). 1/24 A remained crouching while 1/24B went around feeding in (3,4) with tail down - i.e. tail down dragging behavior. Finally 1/24 A began foraging (landing off) to (2,5), n(2) region of grid 10. 1/24 A chased a bird out of 0,0 w area. It looked as if 1/24 A was ignoring it to with it same territory that 1/23 R' defended. But then 1/24 A flew to Grid 11A. 0748 another bird is in the recently vacated area in 10 - I don't think that it is 1/24 A, but it may be. The topography of the interaction between 1/24 A and 1/24 B strongly suggested that both birds were territorial. 0750 buffie 1/24 B chased bird out of (1,3). Struck by size difference between these 2, with 1/24 B being bigger than other. 1/24 C flew to (3,0) + was chased again by another buffy. Left grid
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JPM Myers 1979 19 Tryngites subruficollis Tower Llanos, Estancia Medeland, 35 Km S. of Juancho by road, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina 29 January cont'd 0752 d began following 1/24C, beginning in (3,0). This bird ranged from (2,1) to the edge of the drainage area behind the tower, an elliptical area with dimensions ~ 35m x 12 m. Most of its activity was between the grid + the drainase. After 36 minutes from beginning of sampling time - during which chased 2 birds and was chased back into its area by another - the bird flew across Arroyo Chico. [illegible] followed the bird to a point near (2,1) where it stopped for a few seconds. Then I followed 1/24B - which remained on the grid throughout the entire sample period, from 0755-0855. At 0813 I noted it flying from (3,4) to (1,2) in order to supplant a just landed bird. However, the new bird chased low, looked mean, and 1/24B flew back to (3,4) to paren. The territory defended by 1/24B (other 5 chases, all but 1 successful) was extraordinarily similar to that defended by 1/23C, so similar that I believe them to be the same bird. 0814 0816 124D tegan walking toward 1/24C. Rather than an obvious supplantation, when 1/24D got within 15 m of C, C began heading away from D. Both birds were feeding all the time. This was noticeable because until D began approaching, C had moved less than 5 meters in 3 minutes, whereas upon the encroachment of D, C moved 8 meters in 3 minutes (and 2 minutes later flew 15 m to supplant another buffy). However, there was no tail dragging. As soon as C left the area (i.e. entered (3,0)), D turned around + headed back + went to (0,4). How subtle! - this occurred after a buffy from the opposite side of the drainage area flew to lure to supplant another buffy. 1/24C stalked it week up, began chertling, + suppled the supplanter by flying. 0826 I picked up a buffy as it flew into (2,2) with another buffy. Followed it for 15 minutes during which time it worked steadily on toward (1,5). After 15 min it flew. It had one fight with another bird that has been frequending the (0,6)-offgrid area. This bird unsuccessfully tried to supplant 1/24E from (0,5) - 0836 - the tail dragging display again, this time by 1/24B, which I happened to be watching with binoculars. I was puzzled because 1/24B was in tail-dragging, yet there was no other bird in immediate field of binoculars. All of a sudden 1/24B flew and suppled another bird 10 m away (11). [illegible] This began at 0836 when outsider flew up + began feeding by 1/24E parallel but with tail down. 1/24E may also
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JP Myas 1974 20 Tryngito subnuficollis Tower Llanos, Estancia Miedeland, 35 Ks. of Juancho by road, Ptdr de Madariaga, Pto de Buenos Aires, Argentina 24 January cont'd have been depressing to tad. Tail down by other bird continued for 3 minutes; after which 1/24 E flew at other (which flew back to (0,6), (1,6) area). 1/24 E continued to feed 0900 & began following 1/24 F, picking it up in (A,1). It appeared to be using an area used by a bird that had inhabited before with 1/24 C. Followed for 32 minutes, after which it flew. 0915 Lois picked up 1/24 E 1/24 G in upper right area of grid, beyond 1/24 B. This bird spent the first 20 minute (out of 45) near the grid or out it. Slowly however it shifted the focus of its activity N and away, reading the (90) unit of 4b. At this distance it was confused with another bird (min 45). During the early part of the following season 1/24 G chased out other buffle 5 times. After leaving the area it chased one flying bird toward the original focus. The transitional nature of the flocks today - along with the markedly decreased density - contrasts with yesterday's activation here. 25/27 January — on Grid 10 at 0430 for netting + banding. Stayed until 0800. Throughout this period only 1 buffle appeared in on Grid 4, 6, or 10. Heard some fly by, + saw others down the beach. 11 February see Journal for the account of dismal decline in buffle numbers. None on Grid 4 area. 12 February see Journal 16 February while running the linear grid in the llanos we passed by Grid 4 at 0920 — 5 buffles were on it, with another 10 at least in the immediate vicinity!! Addlethia 1220 reading subunit 1 in linear grid — Chareduis falcklandicus determinedly, chasing buffle off of area. I've never seen a Ch.f. chase a WR! — so they have ample opportunity. 700 m W of Farmhouse Ang, Estancia Miedeland, Ptdr de Madariaga, Pto de Bs Aires, Argentina. 17 February collected 3 buffles after brief search for them, 1015. Saw fewer than 10 in the area about grass area beyond the first windmill (within 200 m). Tower Llanos, Estancia Miedeland, Ptdr de Madariaga, Pto de Bs Aires, Argentina 20 February 0915 driving out to end of linear grid for count we found several groups of buffles dispersed over the llanos, including 15 around the tower on grids 4, 4 and 10. Birds were dispersed in small groups of 3-6 and most of them foraging well separated
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JPMeyes 1974 23 Trying to subadult collie Tower Claws, Estancia Medland, 35 Km S. of Juancho by road, Pteb de Illadariaga, Provincia de Buenos Aires Argentina about to take to flight. It occurs to me that the relative position of the aggressor and the aggrieved causes the two birds to receive very different sights when the two of them extend their wings: the aggrieved see the white under-side of the aggressor, which in turn sees the brown top side of the aggrieved wing. 0913 - good flights on the beach - a hopping + ginning flight lasting for 5 seconds, ending with one flying away and the other remaining to feed. However, situation at Claws remains the same with little or no aggression. There may be a territorial bird beneath the tower or slightly to the East. 0919 on Grid 10 2 buffleis feeding quite close together. Allala scalds are started chucking and running at the other neck held stretched at an odd angle. 0950 - I've been struck by the amount of preening and wing stretching in which the buffleis engage. Would appear to be more maintenance activity than last month, especially directed towards wings. Following Dita: Lou began following buffleis at 0730; during the subsequent 25 hours she followed 9 birds (see pages 43-48 Grid 10 notebook) continuously. No bird remained within the vicinity of Grid 10 for more than 22 minutes; they averaged 12 minutes. Alas! Although the birds may have been leaving the area and then returning, the following data show a very different pattern today than they did last month. No centers of activity, at least on the scale of Grid 10. A small flock of birds, ranging from 2 to 4 birds "sweep" (by walking) through the grid area, continues fairly directly across the grid and out again. Rate of movement of the birds appeared to be faster too - although the exact comparisons await more accurate treatment of the data - it appears that the birds travel farther each minute. Following data also reflects the little aggression which we saw. 26 February On tower at 0645 First buffleis detected at 0713. First bird entered Grid 10 at 0715 0717 saw probably 15 buffleis flying in, 8 flying across range. I.e. birds are still dispersing from roost, it would appear. 0735 - buffleis still coming on the grids - flock of 9. 0740 - the buffleis are herding again. It appears as if they are single traversing a shared transect instead of a linear territory as last month: they walk along, continuing off the grid. A few minutes later another group appears, about the same size as the previous one, which goes on, through and off the grid again. 0745 - there is also a lot of flying today. Very little aggression. 0810 not only are there buffleis on the sand, in numbers, as they were yesterday, but they also reach down onto the edge of the array water - feeding, bathing, drinking.
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JPMyers 1974 Tryngites subroficollis Tower llanos, Salta, Mendoza, 35 km S. of Juancho by road, Prodo de Madariaga, Pucia de Buenos Aires, Argentina 26 February (contd) Accompaniment between today's field data & that of 23 January should reflect the impression that I have today of much greater ratio of movement. 0920 - have been watching a buffle between the grid (10) and the drainage area. It had been perching for 3 minutes when another buffle came into (3.0) of 10, ~7m from 2/26A. 2/26A immediately "chucked" and flew at it. The supplanted bird then flew ~10 m to East and 2/26A followed, clearing further away from area. Days at 2/26A returned toward perching post, gliding through (3.0) of 10, 5m off approach ahead (3.0), its speed increased, + quickly started running at another bird between (3.0) and (3.3) at the stake. Supplementation: 2/26A continued chasing to the middle of (3.0) and then turned around now heading back. This series of supplementation was remarkable for the lack of displays - no wing flashing, nor any tail down. Running was in the face with stretched, slightly off-course manner observed last month. Yesterday (see ap accent) I had the distinct impression that there was a lot of aggression central in the area, where today 2/26A behaving territorially. At 0930 all the local birds flew including 2/26A. Worked until ~30 buffle took off from the vicinity of the tower. Immediately 6 returned, flying into 2/26A's area. Almost immediately upon their return, supplementation started, with one aggressive bird chasing several others. Running with neck stretched. Distance between them at onset of chase was ~5m. I had read (grid) 10 at 0930 - 2 buffle totals. After the Aloe flight (0931) they were gone. And now (0935) five are 5 buffles present, they were "pushed" into the centre of the grid from where they landed by the territorial defence of 2/26A" (which I believe to be 2/26A returned to his territory). 0935 2/26A supplanted again, then flew from a distance of 8 m. 2/26A came up over a little rise in the land, stretched his neck at (surveying its domain?) - continued feeding in same (W) direction, stretched to neck again, "chucked", + flew 5m toward other bird at (3.0) stake. 0940 supplanted from (3.0). Now tolerating a bird in (3.0) within 2ft. But as soon as that bird entered (2.0) it was supplanted. Note: I think that the supplementation previous to this, had 2/26A with an area outside of its territory (1.1) and which it did not defend except in that it continued to chase slightly passed its boundary. Outside of the territory close proximity (2') was tolerated. But a greater distance was not when another bird entered the territory. I am convinced that 2/26A = 2/26A', and that this bird is a territorial bird. I will take feeding data next. One striking difference between it + some of the non-territorial birds is the amount of time that 2/26A devote to looking up.
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JPMyers 1974 Tryngitea subruficollis Tower Harnos, Estancia Medeland, 35 km S. S. Juancho by road, Pto de Madariaga, Pcia de Buenos Aires, Argentina 26 February (cont'd) Jalo #. Seconds since last. Stepmains last. 2/26A' 1 EAT 1 13 39 2 1 3 3 - - 4 1 1 EAT 5 3 6 6 - - 7 14 10 8 3 9 9 - - EAT 10 25 7#5 11 18 64 EAT 12 3 5 13 9 23 74 SUPPLANT 2/26A' flew twice at an intruder in order to supplant, 'clunking' prior to flight. 0856-2126A supplied again. It had been feeding along the edge of the drainage area, well away from other buffy. Flew ~25-30m to supplant, while doing that it ignored another buffy which had also intruded. But then returned in order to supplant. The second intruder did not fly, but rather ran in front of 2/26A' for over 30m. Between 0730 and 0959 Lois followed 11 buffy, picking them up as they came onto the grid. Average tenure on the grid (in the grid itself, not necessarily how long she was able to follow it after off the grid) was 5.7 minutes (N=15; some birds went off & returned). MAX=23, min=2min. See Grid 10 book pp 51-56.
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J.P. Myers 1979 Trygites subrofricollis Tower Llanos, Estancia Wedelond, 35 Km S. of Juancho by road, Pto de Madariaga, Pcia de Buenos Ayrs, Argentina 27 February - Buffiio on grids 10 and 9 at 0720, may have been before. No flights seen by 0750. 1 cup display on sand in Arroyo behind the tower - lasted ~2 sec. 0758 - local buffiio flew down onto beach. (First flush). Within 3 minutes however they had returned to grid 9 (see 0800 sample). 0825 - local buffiio again took off, ~30 of them, they split into two groups. There appears to be a lot of flying in circles going on now this morning. A bird will take off, without any apparent spooking, fly 200 m in one direction, snaggary close to the ground at one instant, then grown up 30m, dive down, and land within 10-20 m of a spot somewhere it took off. 28 February - 1530 - picked up two buffiio bathing in linear grid sample about 1. They were with a flock of 43 LK and 1 Redoal. 1730. 10 buffiio bathing and preening at curve in Arroyo S of tower; they are with ~50 WR. These birds lift en masse at 1745, flying ~200 m E NE after sundown, revealing they landed - At least 20 of them accumulated into the departing flock. 1845 - Several incoming buffiio have been walking and foraging, working from (1) to (2,2) of grid 4. At 1855 - the flock was gone. However before they flew I counted 39 across Venturin Llanos. Some certainly remained undetected in the Nortedace to the S of grid 7. 1928 - small group of buffiio that had been foraging on sand in Arroyo took off + headed inland. Just beyond Grid 7 or 9, foraging tightly in a slight depression in the Llanos. 3 March - Despite a real effort we could not locate any concentrated buffiio roost on the Llanos, searching from 2000 to 2115. Buffiio at first appeared to be collecting in this area ~5 km from tower. We watched them for 20 minutes. I was very tired but the amount of flying - several flights circled out 200 m to the W, then will past the WR roosting swamp, and back around by the S fence to the Thrift again. Is tonight the night? Moon will be full in a week. At dusk I found 5 birds actually roosting: one group of 9 in exactly the spot where we settled 24 February, and one solitary bird - looking like it had come out of a good sleep - appeared just spot-lit behind the Thrift and the other nesting site. Just before dusk I saw a flock of 30 buffiio flying low near the edge of the Llanos, but were unable to break their roost. 9 March - First Buffiio heard from tower at 0734. 0756 a flock of 20 Buffiio landed 100 m SE from grid. However until 0829 Buffiio stayed away from both grids. They A flock, probably that seen at 0750, foraged in a broad path from SE of the grid to NE, appearing (3?) of 46 within 25m, but
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J.P. Myers 1974 Tryngite subroficollis Tower Llanos, Estancia Medland, 35 km S. of Juancho by road Ata de Ulladariaga, Pcia de Bs Asy, Argentina 7 March collected a solitary buffy (115) at the W end of tower llanos, 1230. 1245 found one flock, fairly tight of 18 buffis near the gate along the S. fence. 20 March found 2 buffer war flock of Thinocones in area E of Tower Llanos Swamp. collected one (116). This bird was a juvenile & weighing an incredible 63.0 g. Fat was the heaviest long sandpiper that I have seen this year. Bursa diagnosis, though mainly involved, unremarkable. 23 March 1145 I finally shifted the buffy flock that has been foraging every sunday near the S. South gate to Tower Llanos. This flock, of ~20 birds, has been foraging there regularly for over one week. Today I collected 3 birds out of the flock (101, 123, 123/124). All three are juvenile &. watching two buffies foraging in (Q2) of 4b, 1830. no sign of aggression between them; inter-ind. distance varying from <2' to several meters; left movement definitely coordinated. They are the only buffie on 4, but there is a flock on grid 7-12 buffies between the drainage ditch and the North path to the South. There were a flock of Oreoplopes and one Terribly. The latter appears to be remaining w/ the buffy. After moving closer to the birds I spotted another small flock of Tryngites - ~8-12 birds. Individuals within the flock are very differently at differing stages of baby molt- or there is at least some variation in the degree of influence of the plumage, as I see both a plainer tawny brown as well as the spring rufous-tinged buffy. The former predominates. It appears (to the eye) bimodal size distribution. Also no sign of territoriality: not only is the flock moving but there is a complete absence of territorial display. 15 April After a fairly thorough search of the llanos I am convinced that there are no buffies here this morning (1030). 16 April 0915 - 3 buffies about 250 m SE from tower foraging within 5m radius of one another. They are the only ones. 29 August We have been at Medland since 23 August and have yet to see a Tryngite. Tower llanos, alas, is fairly plowed. But there remains considerable habitat, particularly since at this time of the year many of the grasslands have the physical properties of a short-grass field.
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J.P. Myers 1924 Tryngites subroficollis 30 (9.18), Estancia Medaland, 35 km S. of Juncha by road, Ptdo de Madaniaga, Pcia de Bs Aires, Argentina 4 September 1645 possible buffy foraging with Pluvialis d. and Ocephalus at the very SW corner of the Estancia. Could not find it again when I went in for a closer look 8 September at last! 0920 in the ble II field → a pair of Tryngites. And, third! Survey of the field revealed 8 total foraging with Ocephalus and Pluvialis (see [illegible] journal). The buffies are foraging quite close to one another (a group of 3) in classic buffy style - a jerky, steady walk. 0955 - one buffy approached another from 50 cm - ran over towards 'B', pecked its bill within 5cm of where the other's 'B's bill was. 'B' jumped away. 'A' continued approaching. 'B' [illegible] jumped further away, calmly and while doing so spread its wings out — crooked. They then went to a stream of 2m and fed. All three are scratching a lot (and as good scolopacids should). 'B' just pecked at A. 1003. One ran after another as the latter began picking up something. How active! + aggressive in comparison to Calidris. 1008 - foraging within 20cm of one another. 1009 more aggressive. 1010 they flew. (14.26) Estancia Medaland, 35 km S. of Juncha by road, Ptdo de Madaniaga, Pcia de Bs Aires, Argentina 1145 small — single buffy in flock of Ocephalus and Bairdii spooked by sheep along the Arroyo in the grasslands. Tried to collect but the infernal wind whisked my shot away. (9.18) [illegible] Estancia Medaland, 35 km S. of Juncha by road, Ptdo de Madaniaga, Pcia de Bs Aires, Argentina 10 September 1215 - flock of 20+ Tryngites behind the sheep and Ocephalus. 1235 - another flock of equal or greater size, but spooked by sheep which are running from car. See census in journal. 1330 - sheep et al. gone, things have calmed down. Buffies have separated from other species (they were in a mixed flock). Now there is a pure flock of Tryngites with 28 birds. Infrequently a few Tryngites fly off, one or two together. But the flock is foraging in a fairly tight formation. 1334 - I think that I can discern 2 size classes — i.e. 87+g. 1340 [illegible] — being chased by Danellus. Have landed near the car. 1415. Buffies which flew in near the car 0.5 hrs ago now, in last 20 min, have moved 7D on to the NE. They [illegible] by the car preceding. 1430. Heavy % of buffies are now preening. I have seen stretched using comfort movement twice. [illegible] — both Tryngites and Pluvialis are flying without being spooked — jumping about of foraging. [illegible]. Some
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J.P. Myas 1974 32 Tryngites subruficollis (518) Estancia Medeland, 35 Km S. of Juancho by road, Ptdo. de Madariaga, Provincia de Buenos Aires, Argentina. 14 September see evening expedition in journal re roosting flights. (918) region, Estancia Medeland, 35 Km S. of Juancho by road, Ptdo. de Madariaga, Provincia de Bs. Aires, Argentina (measuring this morning I found a flock of 21+ Tryngits by the deep depression at (1,30) at 0920. After finishing the census I returned to observe (see journal for results). 1010 - buffets spending much Time preening also speaker than morning than they have been. 1011 - vichwing by lapwing. 1012 - buffie flying infrequently. always when bounded by lapwing, but also at other times, some of them are erratic, individual flights huge right bird swirling and whirling, etc. - flying low, dashing up 20-30-50 m, then diving twisting in flight. infrequently, as now, a pair will go together. usually it is only one bird. 1015 - This morning I have seen 2 types of movement in foraging buffie flocks: the first is ordered that in which a small group (4-5 6-10 birds) forage in @@@@@ constant direction, moving as a front across habitat, it looks as if different birds lead the group (i.e. are in front at different times, but more often than not they are strong in a line ⊥ to direction of travel. motion → individuals → their orientation is parallel. there are occasional, indeed not infrequent deviations, but not enough to subvert the consistency in motion. The second type is a more static formation, with the flock staying within a fixed area. there in three cases there does not appear to be a prominent foraging director. Often in these there are preening individuals. Question: does one flock switch modes? 1032 very apparent buffy 100m NE of me. 2 fighting, one chasing others away into neck-up-stretched. very consistent + persistent. Wing flashes (single wing) is there a territorial bird? I am too far to get a good spatial perspective. behaviour tape. looks good. birds fighting. 1037 - everyone flew. oh well. 1039 they landed nearby but not on the same site. It looks as if the car + I are a disturbing influence. Territorial Phovialis nearby (see op. cent) 1045 flying again. some almost landed at old site, but took off again just before breaking down. Vanellus chasing buffilio again. The distribution of lapwing
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J.P. Myers 1974 Tryngite subruficollis 33 (9.18) Region, Estancia Medaland, 35 Km S. of Tucumc by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 15 September (cont'd) must is certainly going to effect the dispersion of foraging bufffio. There appear to be a limited number of places up here in this field where bufffios can land without circuiting. Lapwing to violence. Golden territories will also have an effect [see golden sp. accent]. 1055 everyone took off again 1058 landed in same place from where they took off. 65 in Hut one group up and then at least 20 more on the field. 1100~1104 - [illegible] arrived I thought that bufffio might be territorial, and since 1104 bufffio returned to area they abandoned at 1057 when I moved up to look for territories. First group then moving in a direct line made. a few individuals are peering and many have dropped out. 1108. Second bufffio peering in 'aggression area'. Now. No sign of territorial bird. 1112 - directional group moving back across 'aggression area' after turning around some 'bumping' aggression, but nothing else. 1115 - Cows scared them. 1134 - seeing a lot of wing-stretch comfort movement. Also another stretch: [illegible] wing but keep the [illegible] points w/ tail necks sticks out occurred now just before a bufffio settled down to rest. Also seen as they forage. My general impression that the 'static' [illegible] mode does occur only once the flock has been feeding for a while, and perhaps for the first few minutes after the flock settles down after landing. Directional groups seen after landing and throughout. 'Static' implies some space-specificity. 1140 - bufffio with damaged foot: another eating a small hairy caterpillar. A third perched between the remains of one or several corpses, dawn wind, surrounded by a semi-circle of shit. 1142 - bufffio calling infrequently. Have not seen individual, but every one in a while hear a chuckle or two. (15.21), Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina [illegible] journal re roosting flock + possible roosting area. (9.18) region, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 17 September first bufffio of morning calling at 0637 (see journal). Light level [illegible] too high for good netting, 0642 2nd definite bufffio, flying. 0644 3 more in flock with gulls
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J.P. Myers 1974 Tryngites subroficollis 34 (2,1B) region Estancia Medaland, 35 Km S. of Juancho by road, Pto de Uldariage, Pcia de Bs As, Argentina 17 September (contd) the buffo but I've seen so far have been flying ≤ 1.5m above ground. 0646 - more buffios, they seem to be landing in the NW corner of (1,14). 0647 more. It may be that a very low wet will pick up some of the early arrivals. 0648 1st buffy on ground in front of plane, also 3 flying by. They seem to be coming in in little groups, a few at a time. 0651 first significant flock - 20+ birds, then a few moments later 15 may. 0652 this landed in front 0653 2 way. Most of the buffies are coming in from NE. 0654 as a big flock went over the buffo in front were left. then 2 more 0657 - noticeable pause since 0659 in buffie influx, then have been more going by. 0659 a flock of 30+ foraging 100m SW of me with goldens. flew 0701. 0724 found buffie flock again, approx. when it was at 0701. they have been flying frequently within the area where the flock is foraging. It looks as if a Pitangos is speaking them. Yes! - as a Pitangua fligo from spot to spot the buffies seem to fly away, going 5-10m and landing. 0729 buffy within 30 m of car, behaving in directional mode (see note 15 Sept). Moving E at a few metres/minute. Cup wing display! and a chuck, another cup wing! STILL didn't get the final cup-wing was followed by something else - similar in terms of wrist position but the tops of the wings were at the tail. breast up. The wrists are held out from the body. 20 of them in the flock they 20 are 0730 4 of them have dropped back now, feeding tightly. Lot of hopping (the type that occurs a when one bumps another + the recipient hops to get away). did not see actual bump). The 4 that dropped out have become B (0732) and they are in the same position as they were 0729. Others have moved 30 m W. Of those B, 3 are feeding, 5 preening. Did they drop out? 0733 all of B are feeding now - maintaining static mode however bodies as if in static mode the individuals are somewhat (considerably) more dispersed, no obvious parallel orientation as occurs in directional mode. [supergammas: if takeoff appears in tight flock parallel orientation, decrease aggression then directional mode may result in situations where increased frequency aggression is desirable; alternatively, a directional flock could be 'tighter' because it is parallel] 0740 Flock (primarily static flock B) and the directional flock (now called A) is slowing down or stopped. In B - lowered head chasing, reminiscent of fights in classic buffy border battle. Directional flock (A) has definitely broken down now, many birds precisely.
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S. P. Nyeus 1974 Tryngite subtruficollis 35 (0.18) region Estancia Medaland, 35 km S. of Tumeler by road, Pto de Madariaga, Pcia de Bs. Aires, Argentina. 17 September (cont'd) others are foraging in 'circle', no parallel orientation. Aggression. one (buffy 9-17-74 A) has its head up, chasing other birds out of slight depression a meter or two in width, chasing again, still with head up. (9-17-74 A is in flock B), which went ~70m beyond B) 0740 chased others out of depression, but another buffy is preening at the lip of the depression. Rest of 4 moved away. 9-17-74A appears to be tolerating another buffy within 1km confines of its foraging area - it has gone 10-15 m to the NW from depression 0743 B in still there, 18 total of which 7 are preening. considerable aggression. 0945 resting+preening, beside of Bare facing up, SSE wind, some punched behind grass (it but most not). 0746 flock A obviously static - much aggression, some of it appears to be space specific. Tail down!, but most of it in 'circle' supplementation with topography no more than lowered head - charge + raised head running. Another Whin-cup, with same terminal as described last page. @@@@ (buffy was lone by 9-17-74A. it was then chased by a Phylidris 0747 A is perched behind) small clump of grass, preening. Dispersed other birds. [it is very difficult from this (Down angle to look at spatial relationships between (buffy] 0751 a (buffy entering area where 9-17-74A was chasing others from. within 3 sec of my noticing the ??? intruding, 9-17-74A stopped preening + chased the intruder off. i.e. thus is some space-specificity 0753 9-17-74A approaching behind another clump of grass less than 1m from original after having chased them with several m away. Many of the other local buffies are also preening now - dispersed - 10m, 3m, etc from one another. There are a few staying close 0754 flock B is still (where it was). 0755 9-17-74A left preening + began feeding. Every one in a while does its tail go down - no one in immediate vicinity, no one approaching, but the black strip down the tail is obvious [it was very interesting to watch the circled flock (A+B) lose members and finally come to a halt, and its members show some degree of space-specific behavior] 9-17-74A climbing up a 25cm ant nest - perching behind it, less than 2m from another buffy resting. Now other buffy walking towards A, within 30cm. A' (raiding) head, ran after it. Then scratched and returned to perch. Other buffy went to original position + is preening. This was not
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JP Myers 1974 Tryngites subruficollis 37 17 September (cont'd) (0,18) region Estancia Medelar, 35 Km S of Juanculo by road, Ptdo de Madariaga, Provincia Bs Aires Argentina 0830 head ravaging in directional flock. 0832 the flock seem to be stabilizing in that area. This area is ca 25-50 m where 'A' had been doing his thing. 0835 still some directional component to the flock, at least not all the birds have ceased parallel movement, going closer to A's site. 0846 bufflos within 5m of edge of 'A's site, but none on it. 0902 no one moving in, flock stabilized. 0923 I had picked up a bird to watch at 0902. It has not left a 2.5m radius circle. Another near it (5m). Most of them peering. Now moving with its neighbour and another towards A's spot area. Then a series of Supplantaena with 2 different birds in turn bring the supplanter caused me to lose track of identity of 6 birds. The first of these 2 then flew 25m to land beside another, tail down, and supplant (avoid) Oh for a better grid. OOPS (3,16) Estancia Medelar, 35 Km S of Juanculo by road, Ptdo de Madariaga, Provincia Bs Aires Argentina 0950 collected a buffle from a flock of 6 others + many Phylisalis. First time I've seen them in this area this spring. (24,16) Estancia Medelar, 35 Km S of Juanculo by road, Ptdo de Madariaga, Provincia Bs Aires Argentina 1755 (see journal) 3 bufflos came in from NIO. Flew very low over the swamp in front of us (as if to land, in fact they entered the last stages of pre-flight landing) but then flew on to the SE. (0,18) region, Estancia Medelar, 35 Km S of Juanculo by road, Ptdo de Madariaga, Provincia Bs Aires Argentina 18 September First bufflo appeared flying over (3,19) lawn at 0631. Incident artificial light = 40 ft candles. 0745 - 2 flocks, #15 and 30 bufflos, respectively. Night = 17.5°F. After they landed immediately behind us, 30 m south. The bufflos began feeding immediately, must have been NE from where they landed. 0746 5 more. They are spooked by a few herders flying away, swinging round & landing in a tight flock. Feeding is moderately when they landed the 2nd time they began to disperse radially from the landing center, but it was not even - i.e. although it was radially many levels were not evenly distributed about the whole phalanx circle, i.e. several groups broke out of main group & went off as different subgroups from center of landing. 0750 some are remaining as the [illegible]
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J.P. Myers 1974 38 Tryngites sobruficallis (0,18) region, Estancia Medeland, 35 Km S. of Juncalito by road, Ptdo de Madariaga, Provin de Bs. Aires, Argentina 18 September (cont'd) They are landing almost precisely where they were yesterday (corner of (1,20)). 0651 13 buffii going by, another [illegible] 0752 Cup wing display, repeated twice. [illegible] time held for 3-4 sec - the bird that was the object of the display <6" from displaying bird. The object had its head stretched up. Displaying bird did not stretch neck out but its bill was pointed up at 70°. As the object moved around in front of the displaying bird, the latter rotated so as to maintain the object in the focal point of the display. bill up neck stretched 0754 They flew going NE. At least some of them settled down behind us. 0756 Some flew landing 30 m NE, foraging immediately in largely a directional mode. 0708 Static flock area towards E, the latter of which is a static directional flock containing in beyond it, 19 birds, 4 in static. The former flew. The birds are flying a lot this morning, making following very hard. The movement is between local foraging sites. 'Whiffing' not unusual. 0817 a 'whiffle'. another. There is both a vertical + horizontal component to the whiffing. Flight path ground level "horizontal whiffing" from above That diagram above is supposed to show that when the buffii is flying very low over the ground, 1m above surface, it frequently adds a horizontal component to erratic flight. Down at a very high speed and with annular changing of wing angle (i.e., [illegible] so that you see flashes of underwing alternating with wing covert. Followed one whiffle till it landed; it then began to preen. (5,11) Estancia Medeland, 35 Km S. of Juncalito by road, Ptdo de Madariaga, Provin de Bs. Aires, Argentina 20 September (see journal morning of 19 Sept). Arrived at (5,11) shortly after 1735 in order to find buffii roosts (see journal today). 1745 First definite buffii, a large [illegible]
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J.P. Myers 1974 Tryngites subruficollis (14,13) Estancia Medaland, 35 kms of Juncalco by road, Pto de Madariaga, Proia de Bs Asir, Argentina 20 September (cont'd) as can be seen from the diagram, all did not go as planned. The cloud cover + rain prevented us from navigating well. It also turned out that there were traffic over a much larger area than we expected. On the final approach to the stationing net we caught 2. Slightly banded (see banding schedule). After removing them from the nets, I had Lois drive the car along the theoretical approach of the net, but we settled now that way. After fixing the nets we again shove through through the roosting zone, and to my surprise spooked many. It thus appears that our movements w/ net but w/o light are not very effective in making the birds fly. Interestingly, of the 2 birds netted, one entered the net from behind us, as if it had spooked after we passed over, flying upwind. The behavior of traffic spooked by the light is to fly straight up, not calling. 22 September see journal re evening escapade. We tried to spot light roosting birds. Unfortunately I lost the flash as they flew unexpectedly late in the evening. We did find them by accident later, but only by stumbling upon them. Unless you know where they are, it is impossible to see them when they're roosting. They spring up at your feet, one, five or 30, as you unknowingly move closer. We once within 3m of a large flock before they flew; we had no prior knowledge they were there. It looks as if they land nearby, at least for one or 2 flights. (19,9) Estancia Medaland, 35 km S of Juncalco by road, Pto de Madariaga, Proia de Bs Asir 24 September 1700 found a flock of 20+ traffic foraging near a roosting site we found several days ago. Curiously they are foraging in an area that has considerable surface water, and we hear both melanotos and fusicollis (as well as olivaceus). May be because of today's extensive rains (does it force insects up in areas where they are usually at the base of the grass?) 26 September an sighting record for birds seen en route to La Manga this pm. 1711 began attacking flock of 199 150 m SW of the roosting area. A few territorial goldens were in the vicinity. The flock of traffic is extraordinarily tolerant of me. Traffic within 50 m of car is supplementing. did again (1712) group of traffic somewhere else of this kind are camped, apparently into a 2m radius diameter area, standing very close, many raising chicks. A little fighting - males with straight ups. Within few seconds I see.
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J.P. Myers 1974 Tryngite subruficollis (19) Estancia Wedelend, 35 km S. of Jovando by road, Pdo de Malvania, Pcia de Bs. Aires, Argentina 26 September (contd) one stretching its wing almost straight up with them held slightly out from vertical. Hopping up and down. "fighting" - not a high intensity attack but rather kind of a simultaneous hopping. Cup Display - tail held out horizontally. neck up -> tail horizontal the upper tail feathers spread out noticeably creating a bulge beneath the tail. Some of the hopping birds are actually hovering low over the ground. Fighting again, these are 12 birds involved in this tight pack - not all displaying. More than one was hopping. this appears to be a result of the 2-wing up display (drawn above) - when the bird brings its wings down - hard - it lifts off the ground. Also there was a very abbreviated form of flight - flying flitting - 1720 a local supplanting in this vicinity by buffiio. The bird noted at 1711 is still campaigning, there are others. Buffiiio also being supplanted by the territorial Fluvialis around here. 1722 - spooked, flew over toward the roosting area and landed at 1724. 1725 beginning to work back, some flying. Some of them are going on beyond - a group of ~8, whiffing as they pass by here. A group whiffi. They obviously listen to whoo call of Fluvialis - stopping + looking. 1726 - landed in area from which they spooled (12 birds) - the whiffiiffs continued on (1736 - the flock has changed behavior no supplanting, no odd behaviors, etc. just eat, preen. Fluvialis are still territorial. Did the territorial buffiiio go with the whiffiiffs? 1800 - 19 buffiiio in same area as before. Some perching in a patch of Distichlis, the rest foraging in short grass 1820 see flocking accent for detailed buffiiio roosting flights. Many more buffiiio in area than last series was here in evening - it's a group flight that occurs in 1823. A flock approaching want, combining with those already there, flying low over spot (not fast or frantic). Landing, taking off again, during a flug (your notes) - landing, foraging in a radial fashion from the landing area. The landed birds appear to take off when a large group approaches, swirl, and then land again. Mock calling. Flights 1-2.5 m off ground
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J.P. Myers 1974 Tryngites subruficollis (19.9) Estancia Medaland, 35 Km S. of Tandil by road, Ptdo. de Madariaga, Pcia. de Bs. Aires, Argentina 26 September (cont'd) see Flock accent re sites of buffii roosting and timing of approaching flight 100+ buffii roosted there, flying in by 1900. I tried to spot light. With the high beam of the Citroen they allowed us to approach within 1.5 m, get a return 1m, but no more. Found many buffii, most in small groups, many solitary individuals. 1 group of 15 in a circle of less than 50 cm diameter. (13.4) Estancia Medaland, Ptdo. de Madariaga, Pcia. de Bs. Aires, Argentina 29 September see flock accent re roosting flights (6.10) Estancia Medaland, Ptdo. de Madariaga, Pcia. de Bs. Aires 30 September see journal re unsuccessful forage - site banding attempt (8.11) Estancia Medaland, Ptdo. de Madariaga, Pcia. de Bs. Aires, Argentina 2 October Marcelo Camuani, Susan Williains, Isabel ?, Lois & I tried mobile netting for roosting Tryngites this evening. Several days ago I had noted a large roost on this wide open field. This evening at sunset (1855) I passed by, noting that several hundred buffii came gathered here, and I recorded their approximate position. Then at 2130 the quintet came out from camp, around 2 20 mints, and began snatching. It was immediately apparent that the birds had shifted since sunset. After ~1 hour of tramping about, each net independent (Lois + I or one, yes other 3 on the other), we came across several flocks of roosting buffii. I immediately went and got the other net crew in order to make a more coordinated effort - some sort of sandwiching operation. However, the buffii eluded us each time - never flying far, but usually at an angle from us. The full moon certainly interfered. The buffii behaviour was indirect: we would hear them flutter (very infrequently call) away in front of the nets usually at a distance of 5-10 m when they flew. Guessing from the length of their wings that we could hear the flutters, I estimate they flew no more than 30 m, usually less. Flights were slow over the ground, and usually in unison (probably too soon to imagine because we could not see the painted flight better). Lois had the distinct impression that they flew in the general direction of the moon. We caught none that evening.
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J.P. Myers 1974 Tryngita subruficollis (27) Estancia Medaland (35 KMS. of Juandito by road), Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 2 October (Contd) I suspect that two factors prevented success: 1) the moon - they were able to correct their flight away from us, and 2) lack of good coordination among nets, and practice. Early in the morning we attempted large V's and which applications, closing gaps of 100-200 m. This was too large (from above) net 200m net Later on we stayed close together, working out a an open V: (with this formation we swept the field until hearing Holters, then one side remained stationary while the other circled around as diagrammed, trying to encircle the birds. I believe that with attentive crews + no moon + a better idea of where the birds were even to begin with, this would have worked.) The birds' behavior impressed me as being remarkably calm - we were treated as if horses or some other usual nighttime intruder. 5 October see journal + flocking accent re another unsuccessful netting attempt. also flocking accent re roosting behavior 9 October re flocking accent re roosts 13 October see flocking accent " " 14 October " " " " (118) the tower, Estancia Medaland, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 15 October see flocking accent and journal re observation from dawn 7h am. good following data on directional flock. 18 October see journal re Grid 15 sample (8,11) Estancia Medaland, Ptdo de Madariaga, Pcia de Bs. Aires re flocking accent re roosting flights + also possible significance of guidance of buffalo opposed to golden
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J.P. Myers # 1974 Trying to subdivide (16,22) Estancia Medaland, 35 km S. of Tandil by road, Pto de Madariaga, Pcia de Bs. As., Argentina 8 November (cm/1) of semi-terra? Minimum of 25 buffle in the vicinity - perhaps as many as 15 ten.birds maybe more. It is often difficult to assess the effect of our presence on them, as they seem to be so sensitive to disturbance and unwillingly willing to coalesce, even from territories. (13,21) Estancia Medaland, Pto de Madariaga, Pcia de Bs. As., Argentina 9 November. try again - another % Traffic calculation (see 7 Nov.). 0530 at grid 19 in 13,21 overlooking an expanse of shortgrass buffalo habitat. Buffles flying around shortly after I arrived, perhaps before. 0538 5 buffles landed, and appeared to have flown in from far E. 2 more 30 sec later. three beside landed in (2,2) began foraging in directed flock. 0655 they've been foraging continuously in a directed fashion. 6 of them have reached (2,0) - just flew 15 m. In this flock it does not appear that an individual falls behind then rushes to catch up (something I've never seen emphatically in buffalo - rather there is concerted + steady progress in one direction, some alternation in which bird is leading, (not merely a uniform front). There are other buffles on the grid but so far no suppliants. 0600 - they flew no goshus calling or any other obvious suggestion of a spook. Landed immediately (20 sec) 0608. 1st suppliant. 0635 more suppliant, right in front of the car (2,0/3,0) 0610 - curious -! a buffalo had fooled me for a minute because of its foraging behaviour. The flight was good only for seeing its silhouetted shape. It moved like a small plane - instead of the discontinuous and variable walking rate with a variable number of steps between pauses, this bird took 3-4 steps and paused - like a Chonardius. 0647 everyone flew again when a Varellos began calling. 40 sec later coming in again. Landed. 0648 flew again but 20 sec later landed. made it difficult to keep track. But it's obvious that I'm not the one causing the spooking. NOTE - in the % TB calculation notebook I have been recording site, time, and type of space-specific appearance. Up to now (0655) they've all been chance and supplantations, both head-up running and helicopter flight. Just now (10 on gird map) a 'side-run supplant' occurred: intruder suppliante
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46 JP WILSON 1974 Tryngites subruficollis (13,21) Estancia Medaland, 35 km S. of Tandil by road, Pto de Madariaga, Provincia de Bs. As., Argentina. 9 November (cont'd) in this behavior (which I may have described last January) the supplantor runs at the intruder obliquely, tightening the angle of approach as it gets closer (see drawing). The chasing bird's head is held up, out, and at an angle to the object of its interest. intruder supplantor facing into page SIDE HEAD direction of movement SUPPLANTING 0702 they flew again but again landed immediately after flying low over the area. However there one or possibly 2 buffin did not fly. At least one of these is a possible fen bird. 0721 Several cup displays by now, including one just occurred in front of my death involving 2 members of a directional flock. 0741 - by now it is obvious that a considerable portion of the grid is controlled by 1 territorial buffle. It is supplanting from distances of 40 m and is very consistent. Just now the flock flew again, but this bird, 11-9-74 A did not remain on its territory. This is the largest buffle territory I have seen, covering ~1500 m². Most common supplantation behavior is 'helicopter flight': very typical when distance greater than ~15m. Flight style different from normal - a fluttering flight when the body never assumes usual flight attitude, feet are left hanging, wings held open and at the stroke not full. [illegible] Catching the early morning light the effect of the wings fluttering is quite striking and very visible. 0722 - another cup display at West of 11-9-74 A's territory, again involving members of a directional flock. 11-9-74 A went + supplant. 0831 - appears there are 3 territorial territories impinging on the grid - 11-9-74 A's and 2 others with which it shares borders: C B 11-9-74 A 25 25 25
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S.P.Mayers 1944 Tryngite subbifurcata Tower grids. (1,10) region, Estancia Maldonado, 35 km. S. of Francha by road, Alto de Maldonado, Pina de Bs. Aires, Argentina. 12 November (Cont'd) no diffing middle of Sample (i.e. half way through the ~ 6 min it takes to read the grid) - Run was a burst in golden calling and for a moment I thought that the bird was going to fly. 0905 - supplanted his beginning between the tower and 16b, less than 20m from tower, one of three birds has part of its territory on 16b (which is not part of 16b). the behavior of the chased bird was interesting: it ran with both wings up and out. Chaser has now gone off to rest behind clump of grass. 0906 - seen (3,3) - two birds sitting very close (~1m) as if in the bil-tiled postura. 0912 - 2 successive chases in 16b involving same birds, followed by the chaser going after a 3rd bird. Under Airports. Later two participants began to peep. 0918 birds all spooled, posta. (I saw hole in 930 before spool) [Note on 11-12-74 T, buffy which bois followed on 16D: during first portion of following period 11-12-74T was quite active in supplanting what was apparently a disheveled flock running through. Once they were gone, freq. of aggression dropped, though A was consistent. Appears to feed largely around the PERIMETER of the trailing face following data - few points lie within the perimeter) No apparent borders, nor any males, but buffies. One Rivalis was a solitary in the area most of the time.] 0928 - since the birds spooled there has been little aggression. They have been wandering directionally, toward areas where S-S ag. had been occurring, but on route little. 0929 - head up ad chase, another heli, coming up. Wow - that occurred only once the birds reached the area. Supplantation again - 0934 - more supplantation in 16B. 0944 - spooked again - landed almost immediately afterwards (0948) 0947- a series of ten supp. began. - birds again heading directionally towards 16B. Another heli flight - This bird landed running up wings spread out as it chased. This spook began as we could hear the calling spread, agitatedly near the bird flew again in golden calling. I should mention that this last spooked the flock landed largely in (2,1) and went toward 16B. This time they landed in (1,1) and went forward 16 B. The ten buffy in 16B actually ran at a physical!!! The Ploy jumped at the turned on the buffy. Now preening. Series of supplantations in 16B just before 1000. Also (3,6) region - heli and call. Supplantation in 16b involves a sandwich
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J.? Myers 1974 Tryngita subroficollis 57 Tower grids, (118) region, Estancia Medelcan, 35 km S. of Trancas by road, Pto de Madariaga, facia de Bs. As. Agustina (2 November cont'd) Maneuver in which a middle bird was first chased by one, then another and finally spread out the middles 1000 - one group, 1009 - pr. of birds walking along in (0,0) of (16-) but + looks more as if a [illegible] bird is subtly keeping an intruder out of its territory, walking along the perimeter #1 [illegible] but #2 with other, which may be ten. [illegible] The outside bird was then supplanted by another. This latter then continued back to #1, and they engaged in a border fight -> the #3 chased #1, which ran with wings up and spread out, but #1 then started wing flushing and #3 returned toward head of territory. But #1 may not be ten (although I've seen good SS+ there). [reflection - return to the case of a spoiled flock which had landed off but near its previous foraging area - they approach forage direction to that forage area + then revert to static for ten discussion.] Then [reflection #2 - definite ten birds on the grid this morning but in some of the areas there is some doubt - (0,2) (0,1) (2,2) and (1,2) has solitary birds which are territorial, in (1,0) and (3,0), the density of traffic is higher + the confusion greater. Then are certainly some S-S tendencies, and periodically they are quite evident.] [reflection #3 - static flocks represent a foraging mode w definite space-specific foraging but not necessarily S-S aggression. This would produce default S-S A just as it does in fascicollis. But here this morning, the supplanted which are occurring are not purely non-S-S. I.e. they have SS affiliates.] Even still, the static mode is obviously different from the solitary territorial territory holders (which defend up to 625+ m², with pronounced borders, and nobody within 10-15m for most of the time.) 1023 - sandwhithing again in 16b. After the interaction began between the sandwichers I saw several low jabs, the beginning of a hopping fight where one bird crouches briefly after running and , also towards the belly of the other bird). In this posture, as the jab occurs, the tail + wings are together and they are elevated at a pronounced angle:
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J.P.Myers 1974 Tryngite subroficidis 53 Tower grids, (1,18) region, Catania Wieland, 35 km S. of Juancho by road, Ptdo de Wladarioga, Provincia de Bs. Aires, Argentina 12 November (Cont'd) flew in a circle around what it had understood to be to borders - flight a gliding type, landing at various points in the circle near after other birds + then flying again. 1220 - bird on 176 remarkable for the amount of time that they have been preening + poor concentration lack of aggression. Then just at 1228 a few began feeding and 2 supplanted (other). 1253 - the flock took off for the Arrapo - going low ad east in a fairly direct fashion, all visible left. landing picking up feeding again. then direct turned arrapo. a dramatic event: However within the next five minutes birds began arriving before 1300 and by then there were supplanted the sites of supplantation were consistent with this area's territories. 1306 - simultaneous supplantations. 1307 again - a heli flight from 7 m. Buffy did not stay off grid as long as they did last month - perhaps the cool + very damp weather is responsible. 1510 golden called again but none left. [Note - Lois followed buffy from 1134-1153 on 164, supplanted consistently for- first 12 minutes + then stopped. some confusion so to exact ID. then after several minutes of hovering the encroachment of another bird it supplanted. For the next hour it was being consistent, this bird, however, appeared more 'drunk' or hunting: if it was preening then encroachment was guaranteed until the preening session was over. Further, supplantations were quite - a lot of perimeter walking, and raising little runs - would have off rather than chase. However, there were also several light/drift helicopter supplantations (one of which resulted in the chased bird running away with raised wings) showed border ~ 8m toward tower from (0,0) unit.] 1324 - Supplantation from (0,1) -> (1,1). same supplanter has been active all morning. 1351 - Sup. in (0,0) - chased bird shunned away up. does that mean it was returning to its own turn? 1451 - all birds took off and are flying over the field headed toward arrapo, but came back + whirled over the (1,18) region. 1456 - Tryngite returning to grid + immediate supplantations 1458 - same bird supplanting, followed by gliding around in circle area territory in same place where this happened before. After 1500 we began taking peek data - counting #'s pecks/15 sec. for a 2 min period after a single buffy. Data in Grid 16 looked like pattern on 176 and broken down by sub unit. 1504 - side run supplant revealed into a hopping flight, then flight clear - the supplanting bird (same)
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5.P.Mayers 1979 Trypanito subbruticollis 55 (1323) Estancia Medaland, Pto. de Madariaga, Provincia de Bs. Aires, Argentina 13 November 0815 just collected 2 non-ten. bufffios from [illegible] short-grass. I had watched them for 35min for sign of space-specific aggression, but saw no aggression whatever, even though they were foraging together in circumstances which, had they been territorial, would have generated aggression. (1725) Estancia Medaland, Pto. de Madariaga, Provincia de Bs. Aires, Argentina 16 November Photographing bufffios this a.m. from blind, placed in dense treffly area pre- dawn. They looked to me fairly readily, and during the early morning there were frequently bufffios nearby. Some supplementating and at least 5 good territories nearby. However, the consistency of supplementers declined markedly after one prolonged spook ~0830. Finally by 1045 they were beginning again, although 'tentatively' and only heliopetra flight + subdued side-head supplementing. Foraging very space-limited. Collected a territorial bird, of the above sort (176) Tower Llanos, Estancia Medaland, Pto. de Madariaga, Provincia de Bs. Aires, Argentina 17 November Taking microhabitat data on bufffios, 1630. - appears to be a series of ten birds in this area (1215). Although now we have disturbed them, they continued supplementing even after I took the first few points. One wing flash with us at close range, directed at a bird which had just left because of us. Possible that this is an edge effect: the birds are foraging near the edge of the canopy where there is a steep (vertical) street, broken defining thread of bufffio habitat. Several if not all of the ten were near that. 1720: we have been bothering them for some time, now. Must be going about in a directional flock. 1820-From (8.11) observation post. Territorial birds took us if they abandoned, particularly on the S side of the clearing. Still, ditch once there is not only an edge, but where the dendritic form of the canopy creates + defines a series of patches. At least 2 of these are used by one ten bird/patch. See flocking accent in totals. In the mid-afternoon period to ~1730 botha were foraging as a phalanx - running a few steps, cocking the neck as they ran + leaning over, then
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J.P. Myers 1974 Tryngite subruficollis Tower Hvos, Estancia Medaland, 35 km S. of Juancho by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 17 November (continued) Stalking at insects, usually 2-4 cm above the ground (and therefore near the tops of the grass blades). I noted 2 things about this behavior - 1st - it appeared to become less frequent as the afternoon wore on. By late evening all the birds were doing the classic search peck for which I have good descriptions from last year. Second, when I saw this stalking behavior, the accompanying run in between stubs, birds seemed to be more spaced out. They appeared to move faster, and with less coordination between individuals - indeed if anything there was little resemblance to directional or static flocking. Also distance of aggression of a run - ss appeared larger, or perhaps there was more s-s aggression. Anyway, the style of foraging looked as if it was having an effect upon the spacing. This impression was emphasized when as the afternoon went on I began to see more search-pecking and more directional flocking. ¿Quirinale? [Reflection - it occurs to me that the consistent early roosting of buffiis (~20 min before sunset is period of peak movement) may function to allow the birds to locate the shifting roost site. Certainly more than any other bird, they roost early, and they shift their site. They also feed in the roost area. They also whirl over the general road area more than all other species.] Grid 17B, Tower, (19) region, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Arg. 20 November See journal. Sampling 17B since 0730. Lois + I talking sits of aggression from inward data books. 0757 - birds flew c-d land again. Today we are trying to catch all forms of interaction + therefore maybe somewhat more inclusive than data for e.g., just now - 0801, a bird flew from 0.1 to 0.0, ~20m towards another bird. The flight was helicopter style. The other bird then took off less than 20 sec after the 1st one, and flew approx. the same distance directly away from the supplementary bird. [NOTE - for a period in rush hour marrying note could not be transcribed because of tape-recorder failure]. 0930 - first s peak of the morning - 3 separate flights in by then 4 minutes. At the same time a swainson's hawk was flying overhead -
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J.P. Myers 1974 Tryngites subruficollis Grid 17b, Tower (118) region, Estancia Wiedeland, 35 km S. of Juanculo by road, Ptdo. de Wadaniago, Provincia Bs Aires. Argentina 20 November contd immediate judging from the pre-flight behavior of the birds - alarm calls, crowding, looking upward - the hawk precipitated the flights. It began with a series of Vanellus calls, followed by a wave of Phoenicurus cries, and finally with the take-off. The final 'landing' of these spoofs occurred in air (1,1) regrouping largely in the upper part of (1,1) [see grid sample] - then a directional flock began working eastward and moved in (3,1) and also (2,0). [another transcription period lost] - another second spoof of morning which began with three Vanellus calls. Landed in (3,1) out. Directional flock again coming toward tower. 0954 - bird of territory immediately in front of tower on 166 has reached territory again after last spoof. - this came in directional flock all the way from the 3,2 stake where it was at 0948 on landing. Upon arriving it immediately began a side-head supplantation towards the other bird. Interestingly, the way the SHS developed was: it ran toward the other bird approaching very close (much more so than usual, within 20 cm), the supplanter-'A'-kept it and stretched out just moved it from the up-and-away position to a low position, sweeping toward the object of the supplantation. At that point the object began running. 0955 - A also flew from 6m towards another encroacher. The other bird reported with a rough and tail down both retreated; the result of this interaction was consistent with supplantation and border fights which we were seeing before the spoofs. [more tape lost] 1027 - partial spoof. Some birds flew, others didn't. The territorial birds in the area by the tower did not go (2 of them). 1030 - another complete spoof. - began with Vanellus calling, Phoenicurus followed, a few birds flew, more flew and finally big territorial birds flew. Three later remained until the majority were in a compact, flying flock. However, some other known TB's flew at the crest. Following this spoof of sampled buffalos thrice at 2 min intervals (see data book). They had landed in (0,2) and (0,1) units and began returning to the (1,0) region and other heavily used areas via a series of directional flights. They are fanning out from the site of landing - TB's dropping out as they reach their territories, judging from the fact that when the flock reaches such a site (for eg around the (3,2) stake), one of the birds suddenly begins to supplant. See argument plot a whole series of supplantation. Spooked again at 1038 Spooked again at 1135.
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J.P. Myers 1974 Tryingite subruficollis 69 Grid 17b, Tower, (1,18) region, Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Madariaga, Puicia de Bs. Aires, Argentina 20 November difficult to detect some of the more subtle interaction, particularly since which we used frequently between territorial neighbors. That that the indicated areas are used by territory birds law certain, but precisely when the boundaries are less clear. [See Grid 17b data book for samples, and Grid 16-17 data book for plots and timing of aggression.] (4,15) Estancia Medaland, & Ptdo de Madariago, Puicia de Bs. Aires, Argentina 21 November 0830 - taking microhabitat data on buffico we spotted a bird supplementing consistently, from an area of open shorter grass surrounded by a thistle ridden patch (even tho' buffico were in the thicketed areas as well.) as we watched a directional flock moved into the territory and the bird supplemented all corners. Collected. Note that this individual did not employ wing flares or tail-downs. All we saw during ~15 min observation were helicopter flights and side-head supplement. Grid 17b, Tower, (1,18) region, Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Madariaga, Puicia de Bs. Aires, Argentina 22 November Began sampling 0900 see journal, grid 17b data book, grid 16-17 following data book for timing + location of aggressive acts. 0920 - bird flew over (1,10) to (0,1) unit of 17b from S., near middle, and as it landed it precipitated supplement #7 (see plot data), in which the supplementer flew 25m from just W of (0,0). Supplementing force = helicopter flight. The bird individual flew off. The helicopter bird then flew to lower right of (0,0) unit, clearing other bird out of (0,0). This provoked a supplementer by 0,1-16b bird, which flew at original supplementer, helicoptering. As 0,1-16b helicoptered in, the original supplementer landed, gave a tail down. to us, in the tower, at an angle not dissimilar to that of the approaching, supplementing bird, the black central tail patch was very obvious in this display. The pair then had a hopping flight, and 0,1-16b successfully supplanted the other, which flew back to the center of its territory. 0,1-16b continued feeding in that area going W. after 3 min later, the original supplementer
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J.P. Myers 1974 Tryngites subruficollis 60 Grid 17B, Tower (1,18) region, Estancia Medallon, 35 km S. of Juancho by road, Hdo 22 November de Madalingo, Pucia de B. Aires, Argentina cont'd 01-16b, which then returned to the center of its territory. 0730. Large spook. By 0731, no one had returned. The spook originated out of the WNE; we could see it spreading in a wave as the flicker between the farm house road + the tower- took off, second by second the wave rushing toward the tower. It took less than 15 sec for it to spread that distance, ~900m. Propagated, it appeared, by Pividal's calls. 0740 - no one had yet, or flock is in unit 10 of grid 15, and they are the only birds which I can see at this time in the whole region. 55 buffins, 17g/day. The flock is very tight, but looks as if it is radiating from the landing center. All are foraging directionally. 0805 - (the flock had reached sub 8 of grid 15 - 100m W of the tower. A few are in the grid (2). Another small group has reached the area E of 17b. They may be coming back in. 0818. 19 buffins moving directionally across grid, entering from 3,2 region. See sample at 0820. directional flock. 4 more birds just came in at 0822, but at 0823 the flock flew again. They had just started to supplant from some regions - consistent supp's as we had been seeing prior to the 0730 spook. Flying now over the (1,18) region, landed in 17a. 0828 - quickly dispersing. I count 22 goldens and 85 buffins. Some of the flock going directionally N, others S.-i.e. These are radial dispersal, and the main group is splitting into smaller directional flocks, which themselves ('in units') are going in different directions at d.f. ratio. Curiously there are also now buffins + Plumuela flying up from the W, as if a % had gone to the Trango. 0834 - a number of birds have reached el grido. Tryngites entering from E + from W. There is also a solitary bird which somehow reached the middle sans my seeing of (in 0,2). 0836 - Small flocks continue to pour in from direction of Trango! Did they make an early flight down? The magnitude of the spook, particularly the length of time that they remained in a tight directional flock + that they remained off of the grid suggested so. There was certainly time (0828 - 0828 when there were so few birds in the entire 1,18 region, that some
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S.P. Myers 1974 Tryngita subroficollis 61 Grid 17B, Tower, (118) region, Estancia Wieland, 35 km. S. of Juancho by road, Pto de Madariaga, Provincia de Buenos Aires, Argentina 22 November had to have gone somewhere! 0840 - cap display by 01-16b (the wing of the bird, when cupped, comes forward as far as they go out. Definite curvature of the wing, not simply a bend at the wrist. The head is not up, but rather the bill was pointed toward the head of the other bird. 0845 - golden chard (buffic) buffic winged up. 0908 - an invasion, sheep too. The situation on the grid appears to be returning to normal - a heavy emphasis on territoriality. 0945 - a bird by lower corner of 16b has been maintaining a territory of sorts. It just finished helicopter supplantation. Usually, when a bird enters its territory, it will feed directly toward the bird + achieve a supplantation by 'working' it out with incredible but slow pressure. No overt intense aggression, but instead a parallel feeding until potential intruder departs. The ten bird returns toward center. 0948 - we have been following the 0945 bird. It entered (0,0) of 16b, at which time 01-16b came over, beginning to raise its head by neck stretching at 8m distant. 01-16b fed intermittently, continuing directly toward the intruder's head, raising occasionally + walking increasingly in increasingly more rapidly. The intruder began reversing its direction, in fact walking directly away from 01-16b, until it reached him and during its retreat regularly but with low frequency, showing a tail down. When it reached 1m inside the (1,0) unit of 16b, crowded, tucked bill, and 01-16b, which by that time was in middle of (0,1) unit, began to turn around + fed away. It never reached within <5m of the other bird. Within 30 sec the other bird was out of the crowd + had begun to feed away. The most striking thing about this interaction was its subtlety. Unless we had been monitoring the positions of these birds for some time it would have appeared to have been insignificant, instead of the border interaction between two neighbors that it actually was. A very space-specific encounter. Crowds, tail downs + turn arounds were all positionally consistent with our understanding of the spatial array of these 2 birds' territories.
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J.P. Myers 1974 Tryngitox subroficollis 62 Grid D6, towers (11-18) region, Estancia Medaland, 35 Km S. of Juancho by road, Pto de. Madaiaga, Provincia de Bs. Aires, Argentina 22 November cont'd The caudata 1042-(G1) bird spotted an intruder, from 15 m. we had been watching intruder because it was encroaching. 01-16b began to show signs of supplanting: head begun going up. However it continued feeding, then (its head) went up a bit more, then feed some more. However the feeding direction shifted unquestionably toward the intruder. Intervals of feeding became shorter until finally it raised its head, began running, + flew in a classic helicopter supplantation - body oriented at an angle with respect to ground, not directly towards bird to be supplanted, tail spread, ct. oh well. from above Wagazine 1000 (q)gm censusing for % TB calculation while continuing the grid sample. We know now that 13 birds' territories cinging upon or are entirely contained within the gridded area. 1118 - partial spook. At least 2 ten. birds remained, incl- ding 01-16b. (134 - we should mention that we are fairly certain that 01-16b is the same bird as 11-20-74) A time at which their territory was considerably smaller (see Tryngitox sp. accent) decreases - confident largely because it uses the same perching position, and because some (2) of the borders are the same. 1152 - burst of golden calling; we expected to see a 'spook' but it did not occur. 1256 buffet (20)- 16B future territory less in 16b + is adjacent with 01-16b (a lengthy description of interaction between 01-16b and 20-16b is above) - wandered again into 01-16b territory, who is not visible. but now at 1158 it is back + supplanted. 1300 tool final % TB calculation census. The results are remarkable. During the three hours of censusing (every 15 min) only 3 non-ten. birds were detected at census time. This made for an amazing value of 97% TB!! On the following page (63) of this species is a map of the territories, 13 were present as noted before.
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J.P. Myers 1974 Tryngite subruficollis 64 Grid 17B, Tower, (1,18) region, Estancia Medaland, 35 Km S. of Tandilia by road, Pto de Mad- ariaga, Provincia de Buenos Aires, Argentina 22 November cont'd The behaviour of this Arrayo bound flock was quite different from that of a typical sparrow. To begin, there were no alarm calls. Indeed, it is hard to see how such a massive, coordinated departure was orchestrated. Second, the birds went up, high, and they began by going directly toward the Arrayo, beginning to whirl only after having gone several hundred m E, and reached an absolute altitude of over 50 m. One buffy remained on the grid, ca 0,12 on a previous site normally used by a ten bird - probably the same. 1444- Buffy came back, a few golden arrived, and a few more buffies coming into 17B directionally, from 16c. 1451- directional flock moving across 16b. Looks as if one is dropping out - going from 9.0 -> 3,2 of 16b. by 1504- scaring supplementing, in usually places. birds are spreading out. Looks as if old pattern may reappear. 1509- 12 buffies flew over, 4 landed in another flock but took off again. Not a single crew up by ten birds. 1517- Things not returning to normal. Directional flock in 16B region - some aggression but is not tremendously S-S. 1522- spook beginning with golden call. everyone flying. 1533 a Vanellus supplanted another Vanellus, in the process spooking grid birds. 1538 more birds continue to return from Arrayo, in fact many. They are coming back as individuals or in groups of 2-3. Many are whiffing (a remarkable display). 1539- flock of 8 courting birds, all whiffing as a flock. 1635 - (0,1-16b) and (B,?) still not returned. other TB's are back, though, particularly by 2,2 and 1,2 stakes. 1641 - TB? (2,0-16b) began helicoptering towards bend in lower left of km. As soon as (3,0-16b) took off, the other bird began running away, not waiting for (2,0-16b) to get close. 1658 - looks like (0,1-16b) so back. - But it has been fours for 10 minutes, not supplementing but even so with fairly exclusive use. at 1658 it showed a beautiful flying up - held for 3-4 seconds, oscillating the tip about 1/sec. 1705- looking more as if morning's territories are still maintained
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J.P. Myers 1974 Tryngity subbifoliis 65 Grid 17B, Tower (1,18) region, Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Madaniang, Pcia de Bs. Aires, Argentina 22 November cont'd 1723 - spook 1745 - buffle flew into 0,1 of 16B and immediately began a cup display. No other bird in immediate vicinity. At end of display the bird folded up + began preening. 1801 - 2 buffle headed downwards shooting area, 1807 in 4,4 of 16b I was watching a pair. They had come in foraging di- rectorially. With about 100 seconds lead time I predicted a cup display, but am not sure of my cues. Necks were stretched with feathers puffed, both birds close, both hopping slightly but without wing out. The displacer held for several seconds. At first, the wings were not cupped but rather straight out at an angle [sketch of birds in sequence: beginning of cup, then birds with wings arched upward, then birds with wings fully cupped] it then lifted wings to a more vertical position, arched its back, stuck the tail up unfanned and pointed its bill at recipient. It kept the other bird within the wingtips. Wing very far forward, then towards the end of the display (perhaps last of 9 seconds), the cupping bird retracted its neck to a scrunched position and pointed the bill up at ~60°45-60°. As this all occurred, the other bird moved, forcing the displaying bird to move quite a bit (50cm?) in order to keep the recipient within the cup. The displayer may have been larger than the recipient. 1809-1814 - another cup, same pair I think. By the way, NIDDLER 4PM (CRLA) May 2,0-16b again defending. Just before this second cup began they stood very close facing one another this time the displacer did not reach the final bill up part; nor was the head retracted. It had some trouble because, facing array from the wind (which is strong) it was blown or at least ruffled somewhat, erecting back and head feathers. (or at least I think that was the wind). 1816 - (0,5)-16b now supplanting the displaying bird, which looks as if it is 2,0-16b! Ran away from 0,1-16b with tail down. recipient also supplanting. [illegible] The neck
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J.P. Myers 1974 Tryngito subruficollis 66 Grid 17b, Tower (1118) region, Estancia Medaland, 35 Km S. of Juanda by road, Pto de Mad- curag, Pcia de Bs. Aires, Argentina 22 November was 'moderably' streaked during this cup - not fully up but not refracted, within. 1820 - individuals + pairs are taking off toward roof, going low but direct, the large flight. 1833 - semi spook, but not on grid 1835 first of grid birds left (one). 1847 still supplanted birds (now in fan (0,2)) The birds are definitely leaving the area singly. Some undulating by, going off grid, singly. [reflection ? is it possible that the 17 November roof flight count was affected by this new tendency to leave singly? Would reduce total seen because floderee so much easier to spot. It will also spread out the peak. Stopped observing at 1900. 28 November Due we go again 0550 climbed tower (see journal) 0630 began reading, the (wily) the grid left when we arrived. 0658 - supplmentation beginning again (see plot of locations times + types of aggression in 16-17 databook.) 0931 - one thing # interesting happening this a.m. - not only do we have a stable turn system, but there seems to be a # steady, low rate at which invaders test the grid. All are immediately supplanted. Perhaps this is producing a constant low rate of aggression independent of flu # interaction between grid denizens (except in so far as supplmentation of invaders sometimes pro- voke border interactions). A bird, which we may have 'picked up' flying 100 m away in this direction, flies toward + over the grid, then lands. It is immediately supplanted, until it may fly away or 30m to another area on the grid. If it lands again on the gird, it will be supplanted immediately. Thus there # a wave of supplmentation are produced. For e.g. at 0930 we recorded 6 in a row, the (1st + involving 2 birds supplantiing one, then a third and a fourth got into the act successively supplantiing one unsuccessful invader which moved! [illegible] each time. Obviously I did not # clickate many note in the tower thru a.m. we left at 1130. The situation was very similar to that of 22 November, in fact I believe it could be the same birds. For a time it appeared that the 01-16h wind was not there. However it turned out that it, or somebody using # the same boundaries + exactly the same greening area, had
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JPMYERS 1979 Vultur gryphus Due 10 Km E of Llao Llao Bytium, Parque Nacional Nahuel Huapi, Pcia de Rio Negro, Argentina 14 May 2530 - !! first condor - spotted at great distance while we were driving along the circuito chico on the southern return towards Bariloche from Llao Llao. White on wings + strikingly bulky head visible from distance. Watched it fly out of sight behind a nearby low close hill. It was not flapping. Black vulture in vicinity. ~10 Km S of Epuyen on road to Cholila, Pcia de Chubut, Argentina 21 May 1045 - 6 condors circling up out of a cloud + mtns, overlooking valley. Visibility too poor to see. Soon after we spotted them one circled out of sight into clouds, but others remained for ~15 minutes before building circle + gliding east out of Mtn range. Intermittent flaps. Year's 1st heavy snowstorm has ended within the last 24 hrs - it may be that they're moving out of what is now the snow-covered to work. Cholila Valley, 15 Km N of Cholila by road, Pcia de Chubut, Argentina Driving along the road we have now seen 9 more condors - all flying low, flapping almost continuously + all headed E. There seemed to be little sign of any of the birds moving together - no pairs etc, but individuals were more or less one another. One flying quite high, but several less than 20m above road. More than 10 Polyborus have been passed in front of us, moving in the same direction, also apparently solitary individuals 10 Km NE of el Cajon by road, Cholila Valley, Pcia de Chubut, Argentina 1230 - watching 2 condors flying E over us. Suddenly spotted 2 more perched near a Genanciopsis on a not-too-high cliff face, and a 3rd vulture across a small valley below through which the road cuts. ~130 Km S of Salta via Rte 6b, Pcia de Salta, Argentina 13 June total of 25+ condors seen soaring low and along the cliff faces of this river valley as the road winds up to ~5000' before opening up into the Cafayate valley. ♂, ♀ and immature present. 7 August we are in the same area as we were 13 June, the Rio Conchus River valley between Salta and Tijuy. Yesterday I caught a glimpse of only 9 condors along here. The weather was cloudless and warm. This morning broke with a low cloud cover, obscuring
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J.D.Myers 1974 Vultor gryphes 02 7 August (cont'd) 130 km S. of Salta by road, Ricia de Salta, Tucutina the nearby mountains, enveloping them in fog. The condors are low today, beneath the cloud cover. I climbed about 800' above the road at the Garganta del Diablo, a curious geologic formation in the E cliffs along the river. 4 condors had been circling well below the highest part of the cliff face. They continued to circle, landing occasionally in holes in the cliff or on ledge as I climbed. Several of these landing spots appear to be regularly used perches: the rock face beneath is well lined with guano. We've seen other such white markings further to the north along the valley, and in seven there were condors. As far as I could make out, there were 2 juveniles and 2 q condors at Garganta del Diablo. Once I reached about 800' above the valley floor, they began to investigate me, soaring low overhead, sometimes within 30 m. As they passed me, I could see their necks twist so as to keep me in view. Staring in one hour they came to look, in between soaring to the S along the cliff. Finally, 3 of them glided over the W side of the valley, leaving an adult 2 perched several hundred feet above me. I descended.
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SP Myrs 1974 Phalacrocorax olivaceus Arroyo Chico, Estancia Nodaland, 35 Kms. of Juncal by road, Pto de Madariaga, Proin de Buenos Aires, Argentina. new trick by cormorants again today (second hina) - Lani + I spotted them as we crossed the bridge. I drove upstream to the intersection of the fence further lower down + we waited till they came by - a 'flock' of 7 moving methodically upstream (5m every 5-10 sec or so) in close formation but but spread across our width of the stream (less than 4m wide now over most of this stretch). They are actually not evenly spread across but thus varies. Anyway they are for fishing - alternatively diving + swimming underwater, then swimming on top. As many as 5 have been under at once. Obviously fishing, as they will come up + swallow fish once above. Sometimes - after first dayter - they are so shallow as to leave a wake w/hack even while underwater. a cocoi heron appears to be following. We drove upstream to the curve entrance to the Arroyo from the fence in order to try + photo. about 500m in lake (or 5-3?) they came around the curve went by, continuing as before. Cocoi heron still with them. It thro ahead, almost like them pace, + then this ahead again.
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JPMyers 1973 01 Monk Parakeet Flock size Location time time size Note July 29 Trans chaco road W 295 Km 10:00 4 W 290 10:30 2 W 295 12:00 6 4 W 315 13:00 3 W 330 13:10 6 W 370 15:00 1 W 415 16:05 8 July 30 W 435 16:35 2 July 31 W 390 15:00 8 W 360 16:00 9 W 354 16:05 2 W 320 15:55 15 W 320 15:55 2 Aug 25 17 Km E of Luque Dept Central Paraguay 07:10 7 overcast 8:20 ~25 very windy Aug 26 07:15 6 Aug 29 Piquette-cue, Dept Central Paraguay 06:40 35 07:45 4 Trans chaco W 19 09:00 2 W 30 09:15 2 W 38 09:35 3 W 167 12:10 4 W 170 12:13 2 W 177 12:18 2 W 245 14:23 4 W 264 14:41 4
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JPMyers 1974 Nycticyphus sciniollaris Tower Llamos, Estancia Medeland, 35 Km S. of Juancha by road, Ptdo de Madariaga, Proia de Bs. Aires, Argentina 31 March (contd) I was able to see it for over an hour (intermittently) it was only poorly visible. spent large % of time preening, roosting with bill tucked, interspersed with a few feeding bouts. The bird frequently closed its eyes while feeding. Scratches with foot OUTSIDE (not [illegible]) wing - this I saw twice - like Scolopax. Mouth of Canal 7 into Laguna Mar Chiquita, 21 Km N of Mar Chiquita by road, Ptdo. de Mar Chiquita, Proia de Bs. Aires, Argentina 3 April found one Night in pre-dawn hours 06:15 while we were putting out landing net. It reached complacently to my head-lamping it, & afterwards remained foraging on the broad mud flat. We only saw it near the edge, within ~20' of [illegible] a patch - I take which line the shore at this point. Estancia Medeland, 35 Km S of Juancha, Ptdo de Madariaga, Proia de Bs. Aires, Argentina: 10:30 - walked through section of toles in the swamp where heretofore Nycticyphus abounded (as late as 31 March, my last visit). Absolutely more spooked, the water reaches the now in only [illegible] one place on the marsh - an ~3 m stretch across from the bleid. Elsewhere here is dried or partially chilled mud border separating the tole. Mouth of Canal 7 into Laguna Mar Chiquita, 21 Km N of Mar Chiquita by road, Ptdo. de Mar Chiquita, Proia de Buenos Aires, Argentina 26 November spooked one Nycticyphus during an early morning walk at this location today. [illegible] (species I've seen this year - but the Medeland habitat where they were so abundant last year was dry/barely to fill up with much needed H2O.)
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JPMyers 1973 Southern lapwings Grid I (Farmhouse Puddle) Estancia Wredland, 35 km S of Joaquin, Provincia de B.A., Argentina. 24 December (cont'd) in the midst of other foraging shorebirds without aggressing. This true for the pair on the grid this morning that is chasing birds away from areas where their chicks are feeding. The adults thermally forage at some distance from the chicks (e.g. (0,2) to (0,-1) or 15 m) and fly to the chicks when another shorebird intrudes. 0739 The lapwings being a very disturbing factor, growing now into (0,2) + perhaps (3,2) 0750 SL-chased every one out of (0,1), (1,1) area. 26 December 0510 - Lapwings active now on grid. in (4,0) + rest of low (4,n) area. 0525 - chasing birds out of (3,2) - this sphere of chasity occupies at this time a considerable part of the grid. 0530- chasing from (0,0). Two chicks feeding in (3,0) and (4,1). Nowadell it chasing WR out of (3,1) and (1,-1) 0630 - Lapwings on a real pain. They are really disturbing the grid, chasing birds out of (4,0), (2,0) - all in there. 0705 Hall, a carancha (Polyborus plancus) caught, killed and eate a southern lapwing at the end of pond, ~125 m S of me. I had noticed several minutes ago that the flock of lapwings harassing a carancha at the end of the puddle were not always on the offensive. In fact, the carancha appeared to be following one tero in particular. Then the 7 birds centred their flight over the pond, reminiscently flying in tight circles, then another carancha joined the brawl, less than a minute later, the carancha grabbed a tero as if I made a pay beneath the carancha, headed in the opposite direction. 2 caranchas It appeared as if the carancha just shook out its talon. The predator immediately landed in the grass beneath the site of the capture. I saw a brief series of mutual head holding between the two birds, and then one proceeded to tear out feathers, while the other walked around. Tero's continued to dive (wank). Both birds flew 15 minutes later, with me having seen only one of them eat anything, they took the tero. 3 minutes after the killing, there were 7 teros howling. At 0820 a [illegible] 27 December Looking at lapwings. Lapwings very active on grid first 20 minutes following my arrival at 1125. Chasing shorebirds from lower half. 1335 moved off grid east to the field. This accompaniment followed the appearance on the grid of a snowy egret. The two 'chick'ed the chicks, which had been feeding in (0,0) vicinity, away also. Then about 3 minutes later it chased the
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JPMyes 1973 /1974 Southern lapwing Grid 1 (Farmhouse Puddle) Estancia Medaland, 35 Km S of Juancho by road, Pcia de Bs Aires, Argentina egret and many of the shorbirds present away. 27 December contd Tower Llanos, Estancia Medaland, Ptdo de Madariaga, Pcia de Bs Aires, Argentina 18 January lapwing -> buff-breasted sandpiper aggression. 0735 ~ 200 m E of tower near lowland w/ slight amount of water. 23 January 0700 lapwining -> 4th godwit chasing in 4a. 0730 found SC click foraging in the (0,1), (0,2), (1,1) and (1,2) area of 4b - adult aggression is directed around it, particularly in (0,2) and part of (1,1). 0900 - two ivory gull shorbirds in (0,n) and (1,1) of 4b - 2 pairs adult and 1 chick. At least 5 of the adults are chasing 5 birds !. Not much interaction between pros of lapwings. 0940 - 2 adults flying after Cannaicho coming out of arrays. - Cannaicho flew off see Zonibyx spp accent - lapwing aggressively against Zonibyx. first consistent aggression against other spp. d'have seen by Cannaicho since after chick fledged. there one between subunits 4-5 is consistently going after two local Zonibyx. 1930 - between subunits 5-4 - Cannaicho chasing another Zonibyx. It ignored several roaster WILMPS. [illegible] (5,27) Arroyo Chico, Estancia Medaland, 35 Km S of Juancho by road, Ptdo de Madariaga, Pcia de Bs Aires, Arg. 6 September within past few days (i.e. since yesterday) we have begun to see extensive lapwing aggression directed towards other spp of shorbirds. 0941 today: lapwining across Arroyo in upland short grass (but weedy) habitat chasing smaller shorbirds, most of which are Zonibyx. Baird's + Ch. Falklandicus also fairly chased there in uplands. 0946 chasing again. (0,18) region of Estancia Medaland, 35 Km S of Juancho by road, Ptdo de Madariaga, Pcia de Bs Aires, Arg. -see journal 10 September census of Vanellus and other upland shorbirds 3pm afternoon. What was striking about the Vanellus results was that they were so dense, and that they were almost exclusively in pairs (24 out of 25 birds). @ 1330 - Vanellus chasing Tryngites. 1545 these (lbs) seem consistently chasing Orophelus. I have not been able to locate any incubating individual. 1645 - small group of Vanellus flying off of the field + over road. heading to roost?
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Pectoral right pink left yellow left orange left red left green left pink white bump left pink plectic bands = XCL on hooks 02801 2: 812 [illegible] - 02900 30 December 1a 821 52001 - 52100 yellow orange pink red green
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JPL Myers 1934 Vanellus chilensis 02 (018) region Catania (Medaland), 35 Km S. of Juanchu by road, Pteo de Madariaga, Hacia de Bs Aires, Argentina 15 September 1000 Vanellus chasing Tryngite, Pluvialis and Oreopholus. The flight of a chasing Vanellus is quite distinct. The bird is obviously pursuing — obvious because of the deep thrush of the wing, the lawness of the flight to the ground, reminiscent of jager going after terns, and as the lapwing reaches its victim it swoops — typically going down a little to a [illegible] nadir at the pt. where the offender is, and then rising sharply — flapping — [illegible] — and turning. Lapwings also dive bomb after lapwings using a similar flight. 1018 — possible incubating Vanellus 125 m E. of car in (2,19). Very low profile, sitting still. Black breast patch only partially visible. 1025 — curious going on which I cannot see well because of the local topography. Vanellus display involving 2 birds, one "stretch-wing comfort movement" [illegible] 30° angle 2 in 3 minutes, the other only partially visible, 1.5–2 m from the other, leaning over forward and tremor moving its feet up and down rapidly. All that I can see is the rapid leg motion + the general body fit. Repeated several times. The other Vanellus walked away. 1032 incubating Vanellus off and away. Another Vanellus approaching site (may be same bird). Settling down — definitely incubating. 1105 Vanellus breeding dispersion not at all clear. If nothing else, it is extremely dense. There or another incubating individual less than 100 m to the E. And each of those individuals appears to have a 'mate'. And on all sides of them there are more other pairs of Vanellus. Individuals appear to approach to within ≤50 m of nest without interference. Extensive banding necessary to evaluate, perhaps 2 generations. 1100. 1108 — a Vanellus landed amidst a flock of bufflfs when I have been watching the latter, no aggression. 1120 4 Vanellus "lapwings" near 1st nest seen, but none are of that pair! 3 other Vanellus within 100 m, as well. The density of Vanellus here! See this am census in journal. Does appear that the 'pair' is consistent about chasing other Vanellus out of 50 m diameter hollow along the edge of which lies the nest. Elaborate display see Nest account. 17 September 0649 — Vanellus beginning to close shoulders. See bufflio spaccent 1935 (Vanellus tapping its foot!), going between feeding sites as usual — slow walk — stopping, then tapping its foot in a slow rhythmic fashion — 1–2/sec and 2–5/stop.
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JP Myers 1974 Black-bellied plover Punta Raya, 15 Km N of San Clemente del Tuyu by road, Paso de Gral La Vall, Provincia de Buenos Aires, Argentina. squabrola behaving territorially all along the falling tide gone here. Their territorial calls something like that of dominicanus but lacks the falling frequency. Birds here vary from strict basic plumage all the way to almost complete alternate. BBP eating a fiddler crab (see Arenaria interpres note) (23) La Cravata, Estancia Medaland, 35 Kms. of Juanandia by road, Pto de Madariaga, Provincia de Bs. Aires, Argentina 14 September one squabrola passed over me at 0820 while I was netting this morning called, showed rump patch in flight.
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JPMyers 1943 Golden Plover 200 yds west of the intersection of Canal 2 and Route 11, W of Canal La Valle, Pucia. & Buenos Aires, Argentina Sept 16 cont'd which in the center has several sticks deep of standing water. No systematic attempt made to study feeding sites here but in general the GP's were out of the water.
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JPMayers 1973 Golden Plower 2 Km [illegible] N of Farmhouse, Estancia Weekland, 35 Km S of Tuancho by road Pcia de Buenos Aires Arg. 24 November • 1930 got on roof of Citroen to look for roosting flights of plowers and bufflos. There were a few large (10-15) flocks of golden between 1930 and 2000, but nothing as big as the [illegible] large (30-40) bird flock seen about 1800. Small groups of plowing and solitary golden flew to the ENE from here and looked as if they might be going down about 15 km away. But with the light so low as it in, and with the fact that the birds are flying erratically and low to the ground (they come down frequently so they pass the field in which we are camped), it is difficult to tell when or where they stop. But up to 100 golden have accumulated in a 150 m half circle to the W from here. They are feeding, but much closer together than typically seen in the daytime - no aggression. Some birds are feeding less than 10' from one another. A lot of vocalization, both from flying and landed birds. No sign of roosting - i.e., they continue feeding without any preening, sleeping etc. Contrasts with buffly behavior. I quit watching at 2045 because I could no longer see anything, got up until the least time that I could, the birds were still feeding, still spaced apart. Frequency of overhead flights appeared to sleep. 25 November 0530, in the same field where flew half bar, 100 birds last night there are less than 20 this morning. Spooky. Very spread out - more than 20 yds to one another. Very few flying overhead. Tower Llanos, Estancia Midland, [illegible] Pcia de B.A. Argentina 19 December There had been few flying golden during the morning; they were on the grid at 0530, and although solitary individuals were flying, I saw no flock. Then at 1000 several large flocks appeared out of the W, flying low over the tower. 100+ birds in one. Between 10 and 1020 several such flocks came over tower Llanos. Finally one landed ~300 m East of the tower. The birds (60-70) landed together, quite tight. After standing still for <1 min, almost all of them took off down. Then, within 3 minutes, they started to get up again, this time beginning feeding. Birds moved while feeding in all directions out from the center landing. No aggression at first. A few birds flew beyond the farthest ones, up to 100' or more. Then, after the center became somewhat thinner, the incident of aggression appeared. I watched one bird chase 3 others in succession. It was not the only one so engaged.
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J.P. Myers 1943- 1979 Golden Plover 1975- 1979-1 Tower llanos, Estancia Medland, 35 km S of Trenque by road, Provincia de Buenos Aires, Argentina 19 December cont'd as within 1 minute the course line obviously aggressive cock within the flock. Now, one-half hour after the original landing, the birds appear evenly spaced - in a one minute sample I saw 3 cases of one golden chasing another. At the same time there is a flock of 34 goldens at the S end of the E linear transect on the Arrayo (and 3 Ruddy turnstones). 17 January 8 one golden definitely territorial in sandy area between Arrayo + llanos, may have border in damp area running out from drainage. Feeding in cow pies in sand. Also have seen goldens rising cow pies on llanos, standing by them fearing them apart. 23 January watching gp feed from cow pie - although I have seen them torn cowpies apart - reaching in + pulling at parts, then pausing to see what was uncovered - typically however the gp.w treated all other stopping points in the foraging pattern (run pause+look-pock) Occasionally gp's will remain a little longer 11 February See Journal for description of avian decline in golden population 26 February 1 Golden seen in Arrayo by fence at S end of llanos, feeding in area where cows roost (and where there is a demoralizing concentration of cow pies). 27 February evening - 1800-2000 could see 5 goldens in central llanos from tower. 3 March 1815 - driving through central llanos found 3 goldens foraging with a small flock of buffies, picked up Golden air lifter grid count this morning. Largely unmolted. 21 March found Golden in tower llanos, solitary, put even with buffalo. Molt obvious. 11 April Solitary golden on llanos, foraging near Cuffy [Booby] / Oreophiles flock. 22 April 1 golden in grid in Arrayo by llanos foraging near Ch.falk and Booby 23 August 0930 - 5 goldens on llanos. still largely in summer plumage, but somewhat molted. Very sparkly. @ 1130 - 3 goldens at N end of route followed on short-grass field (see journal) 24 August 1 golden in field near Oreophiles at the SE corner of the Estancia. 4 September 6 in (0.18) fly rke 11. spooked by Pitangus, and [illegible] Vangellu 8 September see journal today for state of Pluvialis on Medland now.
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J.P. Myers 1974 Golden Plover (2,3) on Medaland ways, Estancia Medaland, 35 Km S of Juancho by road, Ptdo de Madariaga, Pucia de Buenos Aires, Argentina 10 September nothing this morning, first par-dawn hour when in which calls of Pluvialis were common, several at waters edge by 0730. infrequently but regularly flying overhead, mostly single birds (2,18) Estancia Medaland, 35 Km S of Juancho by road, Ptdo de Madariaga, Pucia de Bs. Aires, Arg. 1230 - 36 goldens appeared in midday census (see journal). most still heavily splotted on breast with black, but a few are largely white. 1408 - golden stalking repeatedly over the grubs which I described Oreophaslus eating (see apacient 9 September) (15,21) Estancia Medaland, Ptdo de Madariaga, Pucia de Bs. Aires, Argentina 14 September see journal (0,16) region, Estancia Medaland, Ptdo de Madariaga, Pucia de Bs. Aires, Argentina 15 September 1039 Second definite territorial golden (first seen at La Orqueta 14 September am) this bird is in uplands - shortgrass habitat. flew with Tryngite, Oreophaslus, and a few Pluvialis. did fighting with other goldens, running + chasing. lowered wing. also supplanted (Traffico?) Oreophaslus ! 1039 - golden territorial call. where to to too others to do. 1139 golden still consistent.- almost landed on top of Oreophaslus in chase. (8,9), Estancia Medaland, Ptdo de Madariaga, Pucia de Bs. Aires, Argentina 1730 - flock of 120+ Pluvialis in fallow corn field near Sgok onto Tower Clauses. First time they have been since this season. Now on Tower Clauses, however (8,3,16), Estancia Medaland, Ptdo de Madariaga, Pucia de Bs. Aires, Argentina 16 September 1530 golden flock in this area of Medaland for 1st time this year. No apparent Tryngite with them. (0,18) region Estancia Medaland, Ptdo de Madariaga, Pucia de Bs. Aires, Argentina 17 September 0622 heard 15" golden at morning (see journal). Other individuals foraging near canal by 0635. 0634 flock flew in. 0654 golden border flight occurring in same position as before seeing territorial interactions 15 September. actually this was the spot where I saw the 1st golden this morning. the site where the territory is located could be called a 'patch': it is
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J.P. Myers 1974 03 Pluvialis dominica (24.18) region, Estancia Medaland, 35 km S. of Jujando by road, Pto de Madariaga, Pcia de Bs. Aires, Argentina 17 September cont'd a raised area (in a field with many such raised areas + accompanying depressions) covered with green short- grass (probably because there is less dead, thick grass) and a markedly lower density of woody weeds. The raised area is rectangular - 20m wide and 50t long; more than one golden, territorial fluvial. 0354 sign of golden territoriality appearing with regular frequency - often heard territorial Call. 0754-0756 heard @ territorial call 4 times, at least 2 different @ Pluvialis. species-specific 0802 - Pluvialis aggression very reminiscent of falklandius + Brubys topography - wing down, raised back feathers. 0912 a golden in front of us (25 m to E) has been supplanted, while (I watched) particular in moving Trygpter. territorial. The first time it flew against this golden it called a flight call "whew" but when it landed it calls the territorial, descending deu de de de . It then flew again without calling, but upon landing emitted the deu de de de. On the ground cheer involves lowered head, raised back feathers, directed run. In intense interactions wings are lowered off the body, and in border flights the way towards the other bird is forever. (much parallel to dawn border.) 18 September 0644 first golden territorial call, shortly afterwards a flock of 20 goldens flew in. then even golden flew when we arrived at 0625. 0723 in contrast to Oreopholus when Pluvialis receives a pause in its feeding run (....pause...... - etc.) goldens ject their neck back in again after an original lengthening apart, but at the beginning of the pause. (24.16) and (19.9), Estancia Medaland, Pto de Madariaga, Pcia de Bs. Aires, Argentina see journal re roosting site of Pluvialis. saw one golden molting secondaries 15,26, @ Estancia Medaland, Pto de Madariaga, Pcia de Bs. Aires, Argentina 19 September another molting secondaries. (19.9) Estancia Medaland, Pto de Madariaga, Pcia de Bs. Aires, Argentina 26 September see flocking aren't re multi-species roost. Many birds - 40% are molting secondaries! (13.2) Estancia Medaland, Pto de Madariaga, Pcia de Bs. Aires, Argentina 14 October 13/15 taking micro data on Pluvialis. what bastardo they are for water Pip with it.
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J.R. Myers 1974 Pluvialis dominica (3,2) Estancia Medaland, 35 Km S. of Juanday by road, Pto de Madariaga, Provincia de Bs. Aires, Argentina dawn up to 10am 3 hrs, stopped, and as usually resigned myself to waiting for 10-20 minutes as they took their time in habituating to my presence. It takes so long - and frequently after 10-20 minutes, during which time they have been sitting standing, head bobbing, and calling enough to scare anything else off, instead of returning promptly to foraging, they too fly. Why wait so long? (18,7) Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina more golden than as reflected in sighting records. However it is difficult to know, with golden hues particularly, how to count flocks, the land so patchy that the birds all dispersed, and the majority appear to be territorial. Thus, though from any given hummock I might see 5-10 Pluvialis, the whole 'flock' could extend for 500 m. Usually, however, I never see more than 3-5 flying together at a given time. (110) Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina see flocking accent re roosts (1,18) the Tower, Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina - good following data on a territorial golden plover grid (ba this morning - see grid data book. Territory occupied ~ 500 m² supported about 3 flocks. One interesting event occurred when a Kiskade (nesting on the tower) flew at this particular golden when the golden faced a large 1" long, thick grub (very typical fare for goldens here - see them taking the grubs often). The golden flew, with the grub, over 150 m to NE, landed, and was supplanted twice in succession. It then flew past us, 150 m to the SW side of the tower, circled, + came back to land on the territory. It then ate its grub. (2,17) Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina. see flocking accent re roosting Pluvialis por todos lados 17 October (8,11) Estancia Medaland see flocking accent re roosting flights + also possible reason for noisiness of goldens in contrast to buffle
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S.P. Myers 1974 05 Pluvialis dominica (3,24) Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Madarango, Provincia de Bs. Aires, Arg 8 November 1330 - while I have been replacing linear grid stubs in the Array, rest fl ocks of Pluvialis uninterruptedly have been flying around me for the last half-hour. This is a common midday occurrence. counted one flock of 10, another 30. Others can be seen landed in the Array, congregating near the water. 1350 - a flock of 156 is drinking and bathing by the Array from me. It appears as if they've come down from their usual foraging grounds which surround the array here to drink and bathe. How remarkable to see so many golden so close close together with so little aggression. @ Tower grids, (1,18) region, Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Madarango, Provincia Bs. Aires 12 November 0905 and take dispersion data on 176, coin is taking following data again on 16m. The birds look as if it is exactly the same bird, as that used by golden we followed on this morning last month - i.e., I suspect it is the same bird, just supplanted. The supplanted bird flew to 176 and was immediately supplanted again by one of the territorial goldens there.
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J P Muggs 1974 Charadrius falklandicus Arroyo Chico, Estancia Medland, 35 Km S. of Sanandres by road, Pto de Madariaga, Provincia de Buenos Aires Argentina 23 February There are notes on this species prior to this date within the journal. 0803 landed Ch.falklandicus in Arroyo, visible from tower - Left Green in unit 1 of subunit 1B of the linear grid. This bird was landed 23 February on subunit 5 of the linear grid. 26 February 0807 - Lgreen again on opposite side of Arroyo by tower. 1045 R in unit 12 still, as in Lp. Rg on linear grid subunit #5. 1050 Lp between subunits 5 and 4.5 minutes later. Ly on subunit 2 27 February 0749 - Lgreen on opposite side of Arroyo by tower 29 March for a period of resighting of landed falklandicus see resighting chart. Punta Raga, 15 Km N of San Clemente del Tuyu by road, Pto de Gaul, La Valle, Provincia de Buenos Aires, Argentina 28 March 0945 - falklandicus already on beach above high tide line to low tide line (it is low tide) near camp. Foraging solitarily. 0850 - on the cliff at Punta Raga - many falklandicus all along tidal mud flat. They appear to forage out as far as fusiscallus, but also up beyond the high tide line. 22 April Arroyo Chico, Estancia Medland, 35 Km S. of Sanandres by road, Pto de Madariaga, Provincia de Buenos Aires Argentina Since 15 January I have landed 14 falklandicus. Today I resighted 7 of those (4 landed between 1/15 and 2/23, 04/1984) (See hand schedule + resighting charts) of these 4, 3 I know are territorial, and 2 are already invariably seen on these territories. There has been no recent alerting of Ch.falk territorial encounters, nor any sign of flocking, and I have seen in C. fusiscallus along the Arroyo. Between subunits 8 & 7, where I usually see a large # of Ch.f., disproportionate to the totals seen along the Arroyo, there is a large expanse - a delta - created by a drainage ditch which flows into the Arroyo at this point. The Chifalk spread out from their usual foraging site along the edge to forage well away from the water on the flat open sandy delta. One bird here by lo may be territorial in the delta. 1108 Since beginning to take following data on a CWR between subunits 4 and 5 45 minutes ago, I have seen 3 border fights between
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JPMyers 1979 Chuandrios falllandicus 02 Arroyo Chico, Estancia Medland, 35 Km S. of Trenque Leyes by road, Pdo de Madariaga, Provincia de B eating Arg. 22 April (cont'd) 2 fallandicus with contiguous territory. Band 3 Ch.f. today at subunit 1. one @ RoLy lake appeared to have a damaged left leg, even though it still continued to have territorial fights w/a road neighbor during 15 min that I watched it. Subunit 2 at 0917 a bleeding pleuroc @ fallandicus. 0928 a Ch.f. chasing a Cincloida fuscus on subunit 6 (again at 0930 on 7! 25 April Running down the Arroyo between subunits 8+7 I found Ch.f. Ryo, in itself a not particularly exciting event. However at 0950 I found Ryo again, this time with another Ch.f. way-out in the middle of Tamar Llanos with another fallandicus, foraging. 26 April 0945 found Ryo on subunit 6 defending a very small (10m long) territory. Subunit 8-7 is now dry, and sub 6 has seen a great influx of Ch.falllandicus, WR + Zonibyx which, judging from banked WR +Zonibyx came from the B-faces. Ryo is limiting its foraging to an approximate 10m stretch and is defending both ends of the area against intruders-very consistent borders. There are an incredible # of Ch.f. on subunit 6 - each being territorial, which defending a very reduced area. I took micro-hab- data on Ryo, + also pictures of it & neighboring Ch.f. Feeding data from Ch.f. Ryo: time 11:15 air temp = 16.5 substrate temp = 13 stop# # walks since last # secs since last # sec stopped 1 - - 2.5 2 3 1 4 3 3 1 6 4 3 1 2 5 5 40 - PECK 6 6 2 6 7 2 1 PECK 8 2 3 PECK
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JP Myers 1974 Charadrius falklandicus Lago Baquedos, Pcia de Tujuy, Argentina (2000') 17 June several falklandicus in a flock at ~30 Charadrius pluvius, including both collaris and alticola. They are foraging along the water's edge on a extremely broad (2000m+) salt flat. They are the only shorebirds present, + their small numbers are overwhelmed by the uniformity of the habitat Estancia Medland, 35 km S. of Tandil by road, Pcia de Bs Aires, Argentina 23 August scattered falklandicus in the Arroyo and up on Tower Llanos. Saw 6 in short grass habitat, a small flock and several solitary individuals. There are few along the Arroyo but several times I saw signs of territorial interaction. No banded birds present, but 'bump' (see 26 April) was in the same area when it was in April. Or at least a bird with the same cranial deformation is there. Most falklandicus are in spring plumage, or very near to it. A few, all in the Arroyo, remain in winter plumage. Mouth of Canal Vinto Laguna Mar Chiguita, Pcia de Bs Aires, Argentina 24 August 12 Ch. falklandicus foraging on the mud border of the mudflat (p 66 for map) aggression - but it is hardly organized in a space-specific fashion. Considerably confusing, it would appear. Many well molted, although a few dull ones remain. Arroyo Chico, Estancia Medland, 35km S of Tandil by road, Pcia de Bs Aires, Argentina 25 August 0800 - 7-8 subunits 7 and 8 BANDED Ch.f: Left Red!!! foraging solitary but no one to interact with to tell me if it is territorial. A flock is there as in the opening between 7 and 8 as usual - 8-10 birds but none banded. One put out a flying effort reminiscent of LOR's last April-May: whirling straight up tossing from one side to the other touring down the Arroyo. I am finding folk upward again in short-grass fields. They are not common, but I've seen so many up there as down in the Arroyo. 0840 - new spot for feeding Ch.f. watching a bird near a group of LOR on a saturated mud-bar in the Arroyo. This individual runs between sleeping sites like a typical Ch.f. but when it slows, it places one foot forward (sometimes the right, sometimes the left) and vibrates it for 1-2 seconds
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J.P. Muys 1974 Chanaclius falklandicus 26 August (cont'd) Arroyo Chico, Estancia Medeland, 35 km S. of Juancho by road, Ptdo de Madariaga, Pcia de Bs. Aires, Arg. and then peeks 45 cm away from the foot. It has passed through 3 types of that micro-habitat since I noticed this: saturated but exposed mud, 100% surface water, damp sand. It does it only in the first type, but it does not vibrate all of the time. Thixotropic ?? la Orqueta (3,3) on Journal map 8-23-74, Estancia La Atlantida, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 28 August many falklandicus along the muddy edge of la Orqueta. At least 75 here, with possible 10-15 holding territories. Raptor KOLY present!! Also found another bird foraging as did that described 26 August - the foot shakin' 30 August 1730 - 2-3 small flocks of falklandicus foraging + flying about la Orqueta - perhaps a total of 35 birds. The falklandicus are flying either by themselves (i.e. flocks of pure falklandicus) or with Zenithyx, this means that they are largely separate from the 35 peeps which are flying about, also in a flock. I have seen only 2 falklandicus flying with first group this evening. 2 more falklandicus feeding with the fly-shaking routine. Also noted another type of feeding - a very jerky process resembling a Calidris search-pedal: instead of running several steps between stops, this individual took individual steps and peddled between them. Extremely jerky. Arroyo Chico, Estancia Medeland 35 km S. of Juancho by road, Ptdo de Madariaga, Pcia de Bs. Aires, Argentina 31 August falklandicus are spaced out along the linear grid, with some obviously territorial individuals 1030 I had stopped to watch a bairdi foraging alone with a solitary falklandicus - 3 falks and one bairdi flew in shortly. The latter encountered me aggressively from its already present non- specific. But the 'raintut' falklandicus ran at the intruder from a distance of 20 cm, with quick back lurches, calling 'huét huét-huét, huét da da da, huét da da da'. Despite the rapid response, it took several 'half-hearted' attempts (compared to the ferocity of other Chl. terns I have seen) and several minutes, to force the other Chl's away. 1140 - Lr Ch.f. in territorial between units 6+7 (i.e. 1230). Saw one good supplication, the supplanted bird was then chased again by Lr's neighbor to the S (S) 1 September 1145 - Lr is between 6+7 when it has been territorial for the past few days
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JPMYERS 1974 Charadrius falklandicus Estancia Medaland, 35 km S. of Juanuelo by road, Ptdo de Madariaga, Proia de Bs Aires, Argentina 2 September Lred in 12,20 on territory at 0930. 5 September 1730 - Rylr at curve (B[illegible] 10,13). 1750 - Lr in (12,20). 11 September Few falklandicus now along the Arroyo although some remain territorial. I found ten individuals near subunit 6, 7th across from Grid II. Total of 6. (2,3), La Orqueta, Estancia Medaland, 35 km S. of Juanuelo by road, Ptdo de Madariaga, Proia de Bs Aires, Argentina. 14 September recaptured 2 plumers this morning, Rylr banded 23 April, and Ry banded 5 September. The former I have been seeing at La Orqueta and in the Arroyo since returning to Medaland this spring (see resighting chart). It weighed 9 gms more this morning than when originally banded, color band and USF+O band holding up well, the colors especially so. (11,16) Arroyo Chico, Estancia (Medaland), Ptdo de Madariaga, Proia de Bs Aires, Argentina "bump" is lux at 1720 with 4 bairdii - it has molted considerably and the protruding piece on its head is much less obvious, band 16 52113 (17,20) Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Proia de Bs Aires, Argentina 19 September Ry to appear with a small flock of fuscicollis + 2 other Chl. this morning. (2,3) Estancia Medaland, Ptdo de Madariaga, Proia de Bs Aires, Argentina 22 September see journal No falklandicus at La Orqueta today. (10,12) to (11,17), Arroyo Chico, Estancia Medaland, Proia de Bs Aires, Argentina Rr B (or banded port [illegible] 8/1/74) at (19,13). (19,13) Estancia Medaland, Ptdo de Madariaga, Proia de Bs Aires. 8 November what is going on? an adult here by the curve is performing a decay routine, running low, crouching, running further away from work. No chicks visible must try to catch them unaware. (8,13) Estancia (Medaland), Ptdo de Madariaga, Proia de Bs Aires, Argentina 10 November deceiving adult again, and now 1 chick - less than luck old took photos. (10,13) Estancia Medaland, Ptdo de Madariaga, Proia de Bs Aires, Argentina 13 November caught a chick again, perhaps the same one, banded it Rpink. Amazingly, RrB is the deceiving adult now.
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J P Myers 1974 Charadrius falklandicus (12,17), Arrayo Chico, Estancia Medaland, 35 km S. of Juanolas by road, Pdto de Madariaga, Provincia de Bs. Aires, Argentina 14 November 0820 - another family of falklandicus - 2 chicks, only one obvious adult in vicinity. banded one Roboy with USFWS band also (see banding schedule) (23,30) Estancia Medaland, Pdto de Madariaga, Provincia de Bs. Aires, Argentina 28 November 4 falklandicus chicks in the area. (2AB) 1 fledged, separate, foraging with a flock of wigeon in the Arrayo. 3, (one fledged, 2 not) in the short grass uplands nearby. (7,12) Estancia Medaland, Pdto de Madariaga, Provincia de Bs. Aires, Argentina 1 unfledged but largely feathered chick in the Arrayo; saw this evening with one adult visitor nearby.
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J.P. Myers 1974 Zonibyx modestus Punta Raga, 15 Km W of San Clemente del Tuyu by road, Pico de Guadalupe, Provincia de Bs. Aires, Argentina 28 March 1974 1659- the 10 min after tide began going out - a winter plumage Zonibyx showed up in a shed bay beach and flat along with sandpipers, whimbrels, and Ch. Falklandicus . the sup strip standard, not so much in color (very muted) but in relief. (But retain some of the rufous color of breeding) but has definitely gone towards basic considerably. the feeding style very similar to recent tempo + topography to that of a golden plover: it holds still for a few seconds, standing upright, takes 3 or 4 - 5,6,7 steps (something like that), stops, falls another step or 2, leans over just at something. Frequently the gulls consist of more than one still motion. Ch. falklandicus aggressively against the Zonibyx, which was displaced. Arroyo Chico, Estancia Medeland, 35 Km S. of Juancho by road, Pico de Madariaga, Provincia de Bs. Aires, Argentina (did not mention that 25 March saw a probable Zonibyx on the Estancia) 1 Zonibyx in Arroyo foraging with WR + Ch. falklandicus. Picked up one in "running down" totals: they have an obviously different way of flying from either of the other 2 small shorebirds here, and their silhouette while foraging- extended neck, stance etc., are unmistakable. Shows much more dark on rump in flight than falklandicus. 11 April more Zonibyx in Arroyo (see grid totals today + 4/4.) 1300- found flock of 10 Zonibyx in a mix flock of other shorebirds, Orypholus and Tryngite. 1830 - a Zonibyx upland on grid 7 traveling briefly with a very tight flock of buffle. SCRATCHES OVER WING, like Charadrius. Tower Llanos, Estancia Medeland, Pico de Madariaga, Provincia de Bs. Aires, Argentina 18 April am seeing Zonibyx regularly upland now - a few solitary but more frequently in flocks. 1020 - indication that the flock may contain a territorial bird: some chasing by an individual at several others, over distance not accounted for - individual space. Part of a flock of 8 Zonibyx doing so; others probably not. 20 April - a Zonibyx briefly chased by Vanellus in the very trampy terrain by the gate at Tower Llanos. 1805 - Vanellus chasing Zonibyx in Arroyo 22 April resightings on landed Zonibyx! both birds were foraging separately, one between 7+6 and the other on 7. Much Zonibyx intra + inter sp. aggression along the arroyo this morning during the grid reading.
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JPMYR3 1974 Zonibyx modestus 22 April cont'd Tower Lanes Estancia Medland, 35 km S of [illegible], Juancho by road, Rebelde Madariaga, Pcia de Bs Aires, Arg. Zonibyx are obviously moving into the upland habitat on the llanos. A flock is by the Nigate on the llanos, particularly in the very bumpy short-grass (Cynodon) lower area which has become wet water-filled during very rainy periods (i.e. it is lower than the surrounding llanos). A few definite territorial birds here. Also solitary upland Zonibyx near the Huinacu pahel + cut in the middle of the llanos. Several flocks of Huinacous have their one or two Zonibyx fly by and foraging up the Huinacous. A new flock of Zon on the S side of the Huinacu pahel - 9 birds in total. Zonibyx territorial flight appears similar to fallhavicus in that the spatial position + orientation between the birds is very stereotyped - parallel orientation and anti- parallel, with the 2 birds running a little bit, one changing direction, then the other... Bad feathers raised. Some violence - one instance of a Zon hitting another with its wing when the two birds oriented parallel, became very close (4"?) Arroyo Chico, Estancia Medland, Ptdo de Madariaga, Pcia de Bs Aires, Argentin an obvious dimorphism appears to exist in Zonibyx. Nothing found birds weighing 490g + elso 60-75. Three prepared were both 85 and of the smaller weight. While watching a barred! WR today, I think that I can discriminate between 2 sizes of Zonibyx, one about the size of fallhavicus + the other much bigger. Can it be that there are differences between P + Q Zon. interactions with WR or Ch.f? Zonibyx are very aggressive - going after both WR + Ch.f. They appear to force their species away from the water - sand interface: we aren't bothered if they are in the water; Ch.f. can avoid if they're up on the beach. I wish I had precise data for the period when there were only WR + Ch.f. present to compare with now. 23 April melted 2 Zonibyx this morning at subunit 1'; one died and 2 prepared it (135-g). Several territorial Zonibyx in this stretch of the Arroyo. Zonibyx does not, appears forage with another individual (sp. pair) - it is territorial period). 26 April The drying Arroyo has caused many birds to move, including the 2 Zonibyx banded 16 and 20 April: the latter, Ro, pursued on its territory on subunit 5 until there was only a small muddy paddock yesterday, less than 3m long and 1m wide. Today that is dry. But I found Ro down on
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JPMyers 1979 Zonibyx mcdougalis 03 Arroyo Chico, Estancia Medeland, 55 Km S of Juancho by road, Ptdo de Madaniaga, Provincia de Bs Aires, Argentina 25 April (cmt's) subunit 6 with a new territory amidst a mounding other territorial Zonibyx, falcklandicus, and even- tin. WR the [illegible] border encounters between Zonibyx are very reminiscent of falcklandicus. Based of 'tail down' as in a scolopacid, the wings are held down, lowered, exposing the tail + the rump. This is what occurs in an intense battle, particularly when the [illegible] wing lowered bird is about to strike the other with its wings. As in falcklandicus the orientation of the 2 birds - parallel, antiparallel, etc., appears to be very important and ritualized. Attack is of a fairly standard topography: The head of the attacking bird is lowered as it runs at its object - almost as if to raise the other in the air. Contact is often made in these runs. And during the wing-killing bouts, the sound of contact is frequent and carries a considerably distance (10's of meters.) 1230 - subunit 4 - flew to a Zonibyx missing the right leg below its ankle joint! It was foraging successfully. 26 April Tower Ulanos, Estancia Medeland, Ptdo de Madaniaga, Provincia de Bs Aires, Argentina 1400 observing mixed flock of Zonibyx + Oreophasis by the south gate. 5 Zonibyx. see Oreop. spacel for comparison of Dr. and Zon feeding behavior. 1800 Arroyo Chico, Estancia Medeland, Ptdo de Madaniaga, Provincia de Bs Aires, Argentina 101920 Ro on same unit of subunit 6 as it was the morning. 40 Km N of Victoria, Provincia de Entre Rios, Argentina 13 August see today's camp list. Several small groups of Zonibyx found foraging up from the water's edge today in the area wrought with cow heaves. A total of 50 Zonibyx more or less, several of them are [illegible] will along the way to bruting plunge, with their chest pattern well developed. Very much aggression; these birds are obviously territorial. 60 Km S of Gualaguaychili, Provincia de Entre Rios, Argentina 14 August one Zonibyx present at the edge of a drying pool. molting. Estancia Medeland, 35 km S of Juancho by road, Provincia de Bs Aires, Argentina 23 August several hundred Zonibyx foraging on Tower Ulanos and other short-grass areas of the Estancia. Most of them in spring plunge. Many aggressive interactions, often within a context suggesting territoriality. Frequently seen display crest of a lunch-back form
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J.P. Myers 1944 Bonibyx modestus (10,13) Aropo Chico, Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Mladariaga, Pucia de Bs. Aires, Argentina then take the worm our to water (sometime 6" away). drop it in, peek at it, and then eat it. 5 September (contd) 8 September see Journal today for Habits of Bonibyx on Medaland now (9,18) Reguin, Estancia Medaland, 35 Km S. of Juancho, Ptdo de Mladariaga, Pucia de Bs. Aires, Argentina 10 September 2 Bonibyx with buffie flock. (8,12) A Towerllanos, Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Mladariaga, Pucia de Bs. Aires, Argentina 11 September 50 Bonibyx feeding on the llanos, 0840 (5,21), Estancia Medaland, Ptdo de Mladariaga, Pucia de Bs. Aires, Argentina. 14 September my journal
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J Players 1974 Oreopholus ruficollis 1 km E of Farmhouse by road, Estancia Medland, 35 km S. of Juan de la Cruz by road, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina 20 February 8900 saw first individual of the fall (T) in the grassy fields before reading the turn-off to Tower Llanos. Solitary, alit. 7 March I note live only that since 20 February I have seen no Oreopholus. Tower Llanos, Estancia Medland, Ptdo de Madariaga, Provincia de Buenos Aires, Argentina 1 April 5 Oreopholus! on Grid 4 near the tower. What beautiful birds - a very fancy throat remaining in all but one, where it is a mottled brown. Black spot present on all. Foraging very much like Golden, even more so than does Zonibyx! Their call is between a whine and a chime - less than 1 sec duration. 3 April no Oreopholus on llanos. 11 April 1300- 11 Oreopholus with a mixed flock of other upland birds: Tyngite + Zonibyx. collected 1 (130). 1800- 17 Oreopholus in the on grid 4 and penetrating into the thicket patch to the S. one Zonibyx, with them as well as 12 Tyngites. Oreopholus scratched under the wing! - not believed it as Tchel would have predicted. By 1830 I had observed this thrice from a reasonably close distance. Watched Oreopholus foraging: appears to get from place to place like golden, then it pauses at a foraging spot; it runs between sites separated by a few ft, pauses, then runs again. But the details of the behaviour contrast from Fluvialis: once stopped at a foraging position, it leans over (legs bent) and rapidly moves its head up + down, as if the bird were probing beneath the surface of the soil. Occasionally, this is mixed with this action, there is a more exploratory jab. But typically there are several (2-5) up and down head movements, sometimes as many as 10, that takes several seconds to complete. Posture during this feeding motion is with the tail very much elevated. The running between sites is like a plover but there is a more pronounced head withdrawal as the bird runs from site to site: the gape is as follows - stand with head erect for 5-10 seconds, retract the head + run for 1-2 sec (perhaps as far as 3'), stand again, raising the head again, lean over and dig. Posture while standing is very erect, typically after digging it runs a step or two before standing erect again. The tail is wagged, apparently after eating. The tip is moved downward "1"-"2", with the whole motion
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JPMyers 1974 Oreophaslus ruficollis 11 April (cont'd) Tower Llanos, Estancia Medeland, 35 km S. of Juancho by road, Pido de Madarina, Picnic Bs Arty Arg. taking less than 2 seconds. Despite the brevity of the movement it is smooth + un- hurried. 1845 the flock of Oreophaslus (except one) flew to the S. side of the thistle patch, calling as it went. A flock of Buffiris joined them in flight. The birds worked back to W slowly so that by sunset they were by the car. The Oreophaslus continued to forage until, while distracted by Thinocorus, I lost them in the creek. I did not hear them fly off, but couldn't find them while walking around the area where I had lost them. While watching them before they disappeared I saw that, while the tail-cocking occurs during a stand - it does not appear to occur in any obvious relationship to eating. 15 April 1020 - 2 Oreophaslus only on llanos - at E end of thistle patch. 16 April 0915 - 11 Oreophaslus on llanos 22 April I am beginning to see Oreophaslus regularly now when I am out either in the Arroyo or on the llanos. Flying birds are common, as are landed foraging Oreophaslus. There is a flock of 3 that has been using the gate area by the W gate for several days. They were there this morning. Another group of 3 are usually by the SE tip of the thistle patch. I count a minimum of 35 over tower Llanos now. Farmhouse Rd (by Tkt 12, Estancia Medeland, Pido de Madarina, Picnic Bs Arty Arg. found a flock of Oreophaslus by the gate leading off of the Estancia this afternoon (1805). ~ 10 birds there, foraging w/ Zonibyx. This bird is a lot scrubbier - heavier Hustle than Tower Llanos 1930 - they were still there when we returned to the Estancia this afternoon. 26 April see journal. 1400 watching Oreophaslus on llanos by gate - a flock of 9, plus other shrewbird. Oreophaslus eyebrow stand out: viewed from directly in front (bill forward) or from the rear, the eyebrows look like Zonibyx's eyebrows: [illegible] but unlike Zonibyx the Oreophaslus has a much more scolopacid-like smoothness to it (i.e. it lacks the 'squares' of a charadriid). Watching Oreophaslus forage adjacent to Zonibyx one consistent difference between the foraging behaviours is the following: Oreophaslus takes several steps after it has stopped to peer + stretch its neck before stalking picking at the ground.
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SP Myers 1974 03 Oreopholus ruficollis Tower Ulanos, Estancia Medeland, 35 Km S of Juandolo by road, Pinto de Medaniaga, Pucia de Bs Aires, Argentina 26 April cont'd Another words, the feeding behaviour is: stand peck Zonibyx, on the other hand, more typically does not run after the peering place, bending over directly to peck. Nor does it really stretch its neck that far while standing. I suggest that Oreopholus is searching over a wider radius than does Zonibyx (i.e. wider from the standing pt to the actual food being predated) and predict that Oreopholus will also be taking bigger food, if for no other reason than the bigger food will be more obvious than the little insect... Feeding dates 1442 stand # # walks since last stand # sec since last leaf length of stand stand # # walks since last stand # sec since last leaf length of stand 1 4 11 4 2 4 2 5 1 3 12 5 3 10 3 9 1 3 13 4 1 3 2 PECK 4 3 1 4.5 5 4 1 8 6 5 1 5 4 2sec PECK-PECK 7 3 1 2.5 8 4 1 4 1 10 sec Peck Peck. PECK-PECK PECK digging 9 3 1 6 10 2 0.5 4sec PECK 10 3 1 2
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J.P. Myers 1974 Oreopholus ruficollis Tower Llamas, Estancia Medeland, 35 Km S. of Juancho by road, Peto de Medanang, Provincia Bs. As., Arg. 26 April (contd) the feeding behaviour data clearly show that this Oreopholus (4-26-74/01) took several steps after standing while looking for food. Also clear is the fact that it dug for something; the 10 sec spent pecking was actually a digging period, as was the 1 sec peek period. 10 Km E of Tafidel Valle by road, 5800', Pcia de Tucuman, Argentina 8 August a flock of 17 Oreopholus foraging on a heavily cropped (lay horse sheep) grass field near the eastern end of the valley in estancia Tafi del Valle. Sits. Only other birds present on the field were Vanellus chilensis and V. capellanus, as well as Muscisaxicola caprata. Although hectares of similar habitat were available to the Oreopholus, they remained in a tight flock (spaced over ~100 m²) in an area where none of the other 3 spp were present. Foraging technique appeared identical to that which I have described on Medeland. 20 Km S. of Diamante by road, Pcia de Entre Rios, Argentina 12 August flock of 150+ Oreopholus foraging on a short grass (>1" high) and thistle field. Topography is a gentle roll which appears to be characteristic of this area. Beside the Oreopholus, there were 3 Vanellus, many Lessonia rufa, a few Geositta, several [illegible] Polyborus, and 3 Nothura maculosa. Field grazed by cattle. 22 Km N. of Gualeguay, Pcia de Entre Rios Argentina 13 August 100+ Oreopholus feeding on a very short grass field by the road. The field is incredibly dense in cow pie, but I haven't seen any O's using them. I am struck by the utter lack of aquaerium in foraging Oreopholus. Birds cut within a foot of one another, going 'across the row', and there is no call, no obvious threat, definitely no overt aggression. Groups of 3 or 4 appear to work together, going across the field in the same general direction, first one feeding, then as it stops to peck, another underneath. The only thing disturbing this sequence here today is the occasional attack of a Vanellus, at which point the small group flies off callery.
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JD Myers 1974 05 Oreopholus ruficollis Estancia Medland, 55 km S. of Tandil by road Pto de Madariaga, Dicia d Bs. Aires, Argentina 23 August Oreopholus all over the grassland! I mostly in short grass, especially on the NE part of Tower Landa. Several times I have seen a curious almost Columba like sliding in birds flying alone or in small groups. Actually the flight is a combination between the Columba wing attitude, Thinocorus wind display, and Vanellus wing-keeping. 2 September today it is obvious that Oreopholus numbers are decreasing. None on Tower Landa, and few further up the Arago. I saw no more than 50 today total, despite the fact that we went through prime habitat. During late afternoon we went as far as (23, 32) and found denser concentration of Oreopholus. 4 September 1630 p.m. stopped car in midst of Oreopholus flock in (0,18) [see journal]. After 20 min the foraging Oreopholus began approaching the car within 20 m. there were approximately 40-50 within a 200 m radius of the car. No Zonibys, 6 Pluvialis, No Tryngite. 1655 first instance of Oreopholus aggression I've ever seen: a Kiskadee (Pitangus sulphuratus) was the object. Did not see the beginning so am not sure which approached which, but the main behavior once the incident began was Oreopholus [I think that Pitangus flew at the O.] largely because ~10 min ago I noticed an Oreopholus with a large bug in its mouth being followed [both flying] by a Pitangus. The Oreopholus lowered its neck, then, unfurled back feathers, and spread its wings out with its legs bent. The adult wings were not fully extended. Result: [sketch of bird in flight] In the sketch the bird is facing out of the page, i.e. at the Pitangus less than 30 cm away. I could not hear anything, but it may have made a noise. It ran toward the Kiskadee like this. 1700—again today. I am seeing Oreopholus foraging almost without any reference at all to the position of other Oreopholus: they cross-cross on another's path, forming groups, breaking them — a constant shuffle without aggression. 1703 — another Pitangus attack!! The Kiskadee flew at the showbird, which crouched about a meter away, -facing the Pitangus while the latter faced away. They maintained this for ~30 sec + then the Pitangus flew. 1710 — I notice that foraging Oreopholus will
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J.P. Myers 1974 06 Oreopholus ruficollis Estancia Medaland, 35 km S. of Juncalito by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 4 September (cont'd) frequently fly of a kiskadee come to peck on a muddy woody stalk or prominent corpse. 4 or 5 birds may fly in front of a Pitangus thus - sweeping a path. Fluvialis does also. 1712 a Pitangus began hovering about 60cm above an Oreopholus. When this began the Oreopholus took the position described before but with much more frenzy - doing a dance in a circle with the wings held out and down. The Pitangus perched on a muddy weed and a 2nd Kiskadee flew in, landing on the opposite site approx. 60cm away. The Oreo. yanked low and stayed that way. Then ~5 sec later it stuck its neck way up and ran away. 1735 an Oreopholus took a large grub from beneath the surface of the soil and ate it. Grub was a minimum of 1" long, 1/4" thick, white - a classic juicy white grub, 8 September See journal today for notes on Oreopholus status now on Medaland 10 September See journal for census (11,20) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 11 September 3 Oreopholus flying over, calling. (9,18) region Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 17 September Oreopholus mounting a dried corpse? 2nd time (15 Sept not recorded). Both times involved a solitary bird perching on a lumpy of cow shit (3" diameter or so, dried brown), fluttering its wings and lowering the closed region into contact with the food. tried
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S P Myers 1973 01 Hudsonian godwit Rio Salado at Puente Romano, ~27KM SW of San Miguel del Monte, Provincia de Buenos Aires, Argentina Sept 15 10:30-11:46 on shore at in water at edge of reeds. Had been 3 fly past 15 minutes ago. 10:35 20 Hb about 1/2 Km way first group are w/ 7 BN Stilto. the Hb are separated from stilts off the emergent vegetation into the water - although a few are in the vegetation itself (reeds ~ 8" out of water space). 32 Godwits on S side of loop ~11:15. 11:55 9 more. flock of Hgodwits w/ stilt stagers in it at 12:30. Godwits foraging near mouth of river as it flows into the marsh at Laguna Laos Flores. there were more there but I did not count them all. 15 km W of Castelli by road beside bridge over Lago San Lorenzo, Provincia Buenos Aires, Argentina Sept 16 15 Hb headed N across river (in contrast w/ all the other stocks of SB seen at this site which were headed S.) They landed out of sight in the reeds. ~200 yds W of intersection of Canal 2 and Rte 11, W of Gral La Valles, Provincia Buenos Aires, Argentina Many Hb mixed with flock of other SB's. at least 50 feeding in a grass bordered pond. Rio Salado at Puente Romano on Laguna Laos Flores Grande, ~ 27 Km SW of San Miguel del Monte, Provincia de Buenos Aires, Argentina 11 Oct. ~45 Km W of the bridge by the road found about 20 Hb. Not seen in the lagoon itself.
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JPMeyers 1943 1974 1973 02 1974 01 Hudonian Godwit Estancia Medeland, 35 km Saf Junncho by road, Pcia de Buenos Aires, Argentina 11 November in short grass field-one where I found first big flock of traffic - where I solve # godwit plus a nearly flock of 7. Disturbed them before I could see what they were doing. Arroyo Chico, Estancia Medeland, 35 Km S of Juvancho by road, Pcia de B.A., Argentina 23 November godwits spread sparsely along Arroyo, foraging above (1) water line. 3 birds circling in a circle around a cow pie, tearing it apart. Now we know why H godwit have such long bills - to keep their heads above the sluit. Found a cowpie up in the field completely torn apart - maybe Godwit work. Tower Llanos, Estancia Medeland, 35 Km S of Juvancho by road, Ptdo de Madariaga, Pcia de Buenos Aires, Argentina 22 January went to tower at 1800, found flock of 7 H.G. on grid 4. While placing stakes in area for Grid 10, at base of tower, found several cowpie with 1/8 - 1/4 inch holes. Up to 30 such holes in a pie (former). Remarkable work of Godwit 23 January 0700 (ADST) H.G. flew onto Grid 10, began foraging in cowpie 0705 H.G. chasing Golden flower away from a cow pie on Grid 4. Several godwits on 4; all of them are feeding in cowpie, working them over for several minutes at a time. Bill entering as far as to the base of the culmen, although much of the tissue it goes in lies far. Only one godwit / cowpie - chase each other off. In fact it looks as if one godwit protects second cowpie within 1/4 its vicinity. Trivial? 0920 - godwits on many pieces of cow pies. 1 bird sticks bill in one spot, dips continuously in a style similar to that used in 1960. Angle of bill varies from almost horizontal to almost vertical. More vertical angle = less of the bill immersed. But right now a bird is going in vertical w/ bill up to nostrils! This particular bird worked on one pie for 3 mins, now moving to an adjacent one. 1440 - seen a considerably amount of its aggression today - affect the form of which strongly suggests territoriality (I am sure that it is because of the consistency with which individuals defend particular areas. The behaviors of approaching H.G.'s is intriguing; just now,
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JPMayers 1943 01 Tringa solitaria Aug 30 300 Km W of Villa Hayes by road on bank of Rio Verde, Dept Boqueron Paraguay Phil and I spotted a medium sized tringine while walking south along Rio Verde. Very skittish. Bobbing clearly when we are 50 yds away. Bino's insufficient for ID. Flew. We chased it down the river and eventually get it in the scope. Eye ring, no strip, long greenish legs, otherwise fairly dull. Refused to allow us to get close enough for a kill. Tail tail pattern - has dark down center with white sides, striped, like a spotted sandpiper. Eye ring is quite evident through scope. by N end of lagoon at rebro 300 Km W of Villa Hayes, 1 Km N of trans chaco, Dept Pro. Hayes Paraguay While walking down up to the mudflat to place nets Phil + I spotted a single T.S. at the south end of the mudflat. Phil circled around to the W and shot it with a .22. Neck in bad condition, but will try + prepare. Sept 1 365 Km W of Villa Hayes by road, Dept Boqueron, Paraguay Collected single (trin) on small pond by road. It crossed the car in front of us from a circular pond, landed on the mud, + made .0730. by rodd km 270 to 300 headed east on trans chaco NW of Villa Hayes, Dept Boqueron, Paraguay Sept 3 Many of the tajamarce by the road have single T.S.'s on them. We saw at least 10 along this stretch of the highway. They are usually on mud, never in vegetation, and sometime in the water by mud. One $5 was seen nearby a group of 4 pretorals. Another with a greater yelp. All others were alone, never saw 2 solitaries together. km 320 NW of Villa Hayes by road, Dept Boqueron, Paraguay Sept 5 one T.S. at entrance to Eaton's Ranch in puddle by driveway. Up to his belly in water foraging. In a 10' diameter pond.
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JPMayers 1974 Arenaria interpres Punta Raga, 15 km N of San Clemente by road, Pido de Gral. Lavalle, Proin de Bs.Air, Argentina 28 March 20-30 turnstones along a 400 m strocked mudflat, watching one eat fiddler crab. These crabs are quite small (5-6 cm long) and in a dense bank which they have prepared with their holes. The turnstone runs along, very frequently changing orientation + speed of movement. Stops, jumps a hill down a boll, + infrequently comes up with a crab. The crabs leave about a 0.5 m radius about the bird: as it approaches to that distance they retract into holes. 15 min later I found another turnstone clearing crabs. 1805 - so far I've seen no signs of space-specific aggression. I have seen an Arenaria chasing after another which has a bundle of food. Now here is one feeding on a dead (or dying immobile) crab in the mud, another is walking by, + coming into the crab. Unfortunately I am too far to see details of the interaction but the following process is evident: as the 'intruder' approaches, the feeding bird rotates about the crab so as to keep facing the intruder: inttrud motion -> From above motin <---crab feeder motion One of the turnstone here this afternoon has moulted considerably, not only on breast but also the head has a very muddy look to it. Others have not progressed so far, but all are obviously on their way out of basic.
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JPMayers 1974 Stegamopus tricolor (2,3) on Estancia Medaland Map [La Orqueta], 35 Km S. of Juañche by road, Pito de Wladuina, Proín de Bs. Aires Argentina 10 September 0730 spotted 2 phalaropes while feeding mist-nets. Foraging in shallow weed water lying over thick, oozing mud. With flock of fusicollis, bairdii, melanotos, and Charadrius folklandicus. 4 (16,11) Estancia Medaland, 35 Km S. of Juañche by road, Pito de Wladuina, Proín de Bs. Aires, Argentina. 11 September 1115 2 phalaropes in Arroyo feeding downstream from QRS. # swimming around, pucking at surface.
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JP Myers 1973 1974 Gallinago gallinago Grid 3, 500 m N of Farmhouse, Estancia Medeland, 35 Km S of Juancho by road, Pcia de Buenos Aires, Argentina 6 December several Gallinago [illegible] specked (not together) from area while I was tromping around. most of them out of 6-8" grass about away from open water 16 December ~5 Gallinago, foraging in area just above Grid 3. they were not as spread out (i.e. dispersed) as I am used to finding them. 18 December a definite group of 5 Gallinago foraging just off of the grid, in a pull of tall grass between and the grid and my observation post. Grid #1 (Farmhouse puddle) Estancia Medeland, Pcia de B.A., Argentina 24 December a pair of Gallinago flew in 0622, she landed on grid, other off behaved curiously for first few minutes - ditting quickly, watching, then they began to food. During one of the grid sample 0630 I actually picked up & in one visit. They gradually moved off the grid in my direction. 6 km N of Farmhouse, Estancia Medeland, Pto de Madariaga, Pcia de Bs.Aire, Argentina 25 August many gallinago in this area - one of the few places now with swampy low grasslands (see journal 23/10, 24, 25 August) 2 appear to be advertising territories - calling + flying in a large circle several hundred meters in diameter. Call comes as they dive towards the surface. also there are several going around in small (2-4) groups. No aggression/interruption with Rallidae. (25/8) Estancia Medeland, 35 km S of Juancho by road, Pto de Madariaga, Pcia de Bs.Aire, Argentina 7 September a 1745 a solitary snipe attacked my albatross as I "stole" the "through" Spartina by a swampy. It was croaking every 5-10 sec in a sound reminiscent to its flight call. Fed intermittently. I collected it (155). I have not noted in this space that many wet areas of the Estancia are territorial, displaying Gallinago. (22/17) Estancia Medeland, Pto de Madariaga, Pcia de Bs.Aire, Argentina 8 October 1600 - a gallinago has been displaying here over a S/S rest (see journal) since 0600. - almost in constant. flying in a 200 m radius circle, more or less, during
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JPMyers 1974 Thino Thincocorus tomicivorous Tower Llanos, Estancia Medeland, 35 Km S. of Tucumc by road, Trito de Madariaga, Pcia de Buenos Aires, Argentina 3 March They're here! while on the llanos a duck & sp looking for buffy roost & watched what I first thought was a buffy flying up from the thistle, high, circling in a broad path (radius 100m). Each time it went through the NW/NEward part of the circle, it did a peculiarly can-breeflylike flight, but one I had seen solely Thincocorus in Chubut & Santa Cruz during last October-November: the "wind display", where a male lifts fly up into the wind, opens the wings and soars, with wings appraised downward. (handing out of page) Although then the bird swooped down exceeding fast following each soon. Instead of landing, however, as the did last summer, this bird rose quickly again + circled. The third time ended with the bird landing in a ragged grass area - 6" high. I tried unsuccessfully to spot it, because by that time I doubted it was a buffy. Especially so because of the landing, which was particularly abrupt. Then, 15 minutes later we got a good look at another Th., which hurried out of a solitary road beneath a thistle. 4 March 1015 searching through thistle I found 2 Thincocorus. Either they are juveniles or have muffled. Must collect. 1930 - after dark, in same area what night but saw no Thincocorus. 5 March 0930 - in some location as yesterday found 4 Thincocorus sedosnajus, 2 relatively solitary, and 2 flying in together. Collected the latter birds (092, 093). The feather front on the wings was particularly annoying in both three birds: most feathers coming out with potato food. In 093 found seeds, cold pods, and little leaves in a seed crop (?). Both ad. 07+? A few feather follicle showing in each. 7 March visited some area where collected 5 March. No sedosnajus visible. 13 March 1800 - collected a sedosnaja from same area today. Fathers present. Maybe same flock as seen earlier today the birds were feeding in a tight flock in an open area in the thistle patch. ground cover too low to Salicarnia and some other thick lined plants (but broadland, very short), as well as dandelion-hypers. The sedosnaja could be seen picking at the seed/seedheads of the latter plants. Both 07+ and 09 in the flock. 900 m W of Linear Grid along Arroyo Chico, Estancia Medeland, Pte de Madariaga, Pcia de Buenos Aires, Argentina 15 March spotted 3 Thincocorus while latter hiking along Arroyo. They were in the bushy area on the banks of the Arroyo.
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JP Myers 1979 Thinocorus tunicivorus Tower Llanos, Estancia Medeland, 35 km S. of Trancio by road, Ptdo de Madariaga, Proia de Buenos Aires, Argentina 16 March 1015 - spotted flock of 25-30 Thinocorus, flying over the llanos. They landed in the pampa Thistle area where I have found fewer previously. 1230 - found flock of 25-30 thin, preumably the same ones as seen 1015, in Thistle. 87° + 8° percent. Nothing obviously juvenile (look!) only know if it was obvious). 20 March see journal. I have seen over 50 Thinocorus today. They appear to be diversifying, i.e. occur- ring in other types of habitat (but still very scatter). 2 April numerous Thinocorus in llanos and surrounding hills. I found over 150 in the vicinity of the thistle area where they had first appeared. Their birds were separated in several flocks of 30-40/flock. In addition to these were other flocks in the short grass portion of the llanos, quite close to foraging buffalos. Also found Thinocorus on the roads + in the corn field - even one "in the mud by the Arroyo"! They're everywhere!! One of the 5-snipe in the road in the fallow cornfield took a 'dust bath' as I watched - it consisted of 2 behaviors performed in sequence: first the bird shook its bill sideways in the dirt, driving up some dirt. It then scratched with its feet at the dirt, alternately perhaps alternating one foot then the other, but in any event, more scratching rapidly + throwing up a cloud of dirt behind it. Bill digging then began again. It did not appear to me that the bird was eating, although whether the function of the behavior was actually to bathe with dust was not indisputable. Arroyo Chico, Estancia Medeland, Ptdo de Madariaga, Proia de Bs. Aires, Argentina 11 April. Another bird to the creoptic list - a 8-9 seedeater was cropping grass blades growing out of an old creopic on the beach in the Arroyo. It also dug within the another creopic, grabbing a piece + shaking it, then repeating. Whether it was taking seeds or insects I don't know. After going after the creopic for a few minutes the bird began foraging on the sand, pecking at objects too small for me to discern. Tower Llanos, Estancia Medeland, Ptdo de Madariaga, Proia de Bs. Aires, Argentina there are many 5-5's on the llanos - at least 5 or 6 flocks of 30+ birds within the area that I frequent. They appear to be roosting on many of the sites where I find them foraging during the daytime. 1845 (sun set 1925) there are at least two flocks along the edge of the
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J.P. Myers 1974 Thinocorus rumicivorus 11 April (contd) Tower Clanos, Estancia Medeland, 35 Km S. of Juancho by road, Pto de Madariaga, Pcia de Bs As, Argentina thistle patch, settling down. They scratch their heads under the wing, unlike Charadrius. 2005 - returning from llanos found the usual small group of thinocorus in the track across the fallow corn field; they were roosting. I find it interesting that thin appears to roost on its feeding sites in small flocks, rather than refuging to some central roost. This makes similar, but perhaps a more extreme example, of what I find for Tryngite + Pluvialis dominicae. 26 April 1620 I took micro-plotting habitat data from Thinocorus by the E edge of the thistle patch on the llanos. Earlier had watched a flock of 17 thin. out air shortgrass near the gate moving as a very light unit, near + within a mixed flock of Zenaida and Oreophasis. Despite MAE Rumboll's belief that they are 2 spp of Thinocorus here, I have been able to ID only one, rumicivorus. There are not two obvious age classes of seedeater, nor are there any 87 grey-backed, which would be obvious. 9 June 3 @ Thinocorus r - flying over, calling (see camp list) Estancia Medeland, 35 km S. of Juancho by road, Pto de Madariaga, Pcia de Bs As, Argentina 23 August a few Thinocorus spooked by the gate to Tower Clanos. Several large, very light flocks flying during mid morning over Tower Clanos and points along the Arroyo further north. appears somewhat unusual - they used to be seen only when spooked. Now I see more in the air than on the ground. 30 August a small flock of Thinocorus on the plowed field near the arroyo (8/12) on 8-23 map Here are not the first seen since 23 August, (that is as I usually see several flocks of 50+ in Tower Clanos or similar habitat or the Estancia). But flock numbers are declining. I have not seen over 100/day since arriving. (8/12) Estancia Medeland, 35 km S. of Juancho by road, Pto de Madariaga, Pcia de Bs As, 10 September saw flight 5 Thinocorus at 1830 - first saw for several days. 11 September collected 87 Thinocorus, a few hundred m E of last night's sitting today at 1130 (actually seen at 9.11). 2 nearby. 2 flying in air at 1134 at same site calling in a more elaborate way than their usual flight-call.
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JPMayers 1974 Parasitic jaeger Punta Raza, 15 Km N of San Clemente del Tuyu, by road, Ptdo de Gnel Lavelle, Pcia de Bs Aires, Argentina 28 March 1815 - jaeger coming down beach. 3rd one seen today, all of which have passed within 20 feet of us, flying low over head + affording an excellent look, tail is classic shape short barb2nd-3rd dark phase with very prominent white wing patches. I first detected it because of the uproar in the shorebirds - everything is in a commotion + flying - coalesced into a single 3 large flashes of 100+ birds / flock - mixed with WR, Chiloe, etc., Arenaria etc. Kelp gulls + flocks of terns also took off. The jaeger hunted gulls + terns in air. Then landed beside 2 Kelp gulls. The jaeger appears to be molting primaries now (or is it a bird WTE Rumboll tried to shoot?) 29 March 0950 - jaeger present on same mud flat this morning. It has been perched sitting in the mud well away from the tide line for over 20 minutes. No birds around it.
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JP Myers 1974 Geotita cunicularia by road Tower Llamos, Estancia Weekland, 55 km S of Tucumc, Pto de Madringa, Provincia de Buenos Aires, Argentina 20 January 0640 Geotita foraging on lomas at the base of tower. Not concentrating in couple, but mostly in between. Foraging action between a towner and woodpecker frame. Later, will hammer for several seconds at one spot.
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SP Myers 1974 Pseudoleistus viridescens Tower Llamos, Estancia Medeland, 35 Km S. of Tandil by road, Pto de Wadariaga, Pcia de Buenos Aires, Argentina 18 January picking up Pseudoleistus v. on grid 4. Their feeding behavior is much more deliberate than that of Tryngites. P.v. is slower, more methodical it would seem - turning over cow pies, shoving their bill under, working around the beans. When they concentrate on very small area working them over thoroughly (it would appear). Note that P.v. a swallow cowpie user. 16 January mid afternoon - while running grid in Arroyo saw huge (100's? - 1000) flocks of Pseudoleistus whirling over fields. Not seen anything as large as this to date. - their flocks were previously of a different magnitude - 30-40 birds at most — see map, journal, 8-23-74 (16 January, Estancia Medeland, 35 Km S. of Tandil by road, Pto de Wadariaga, Pcia de Bs. Aires, Argentina) 10 September loose flock of Pseudoleistus - foraging near buffy-golden-Gracopholus - Emileyx flocks. ~30 individuals, spread out as a front across >50 m of land. One of these is running from cowpie to cowpie, inserting its bill beneath, forcing them up whence, and eating whatever lay beneath. Of course, this works only with old and dried cp's. Movement between forage sites is interesting: first they walk, waggling in the process for the first 1/3-1/2 of the distance, then they begin to hop, which increases their speed. Sometimes this hopping develops into flying, particularly if the individual has fallen behind the main center of the others. Other foraging sites typically are bunches of grassland open field 15 September more cow-pie toppling by Pseudoleistus individuals. Today accompanied by Molothrus bonariensis — (see cowpie accent)
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J.P. Myers 1974 Flacks Estancia Medaland, 35 KMs. of Juanambly road, Pte de Madariaga, Provincia de Bs. Aires, Argentina 30 August I will record due varied observations on bird flacks - any species, size, quality, activities and activities and behavior. Information of this sort has in the past been recorded underapp accent, and will continue to be so for calidrine sandpipers. These observations will be cross influenced here, and if dealing with mixed flocks, rippled expanded. A recurring, frequent site in the skies hue at this time of year are flacks of Bunoida ariiculata, flying generally low over the ground at a height of 30-50' in a tight formation, occasionally spreading out only to compress back again. My impression is that this is the dominant direction at any given time of day, but that may not be so. (15:27), Arroyo Chico, Estancia Medaland, Pte. de Madariaga, Provincia de Bs. Aires, Argentina 6 September 1040-1100 while taking grid data on bird it I also counted Bunoida flying over, noting direction. The flocks were as described 30 August. One interesting observation was that while most (winded, almost all) down were flying S down the Arroyo (and also S out from Nullamos), a few could be seen infrequently flying N, in diametrically opposed direction. Three times then returning flocks (10-30 birds/flock) flew directly into an oncoming flock, breaking it up, causing momentary chaos. The Swad birds typically swerved 10's of meters high at the last moment to avoid the collision. (See WR sp. accent today) time Bunoida flock sizes going south = 250 0942 80, 50, 50, 30, 40, [illegible] = 250 0944 50, 15, 25, 1, 30, [illegible] 120 0945 10, 10, 30, 60, 50, 50, 10, 80, 30, 50 420 0945 50, 10, 30, 40, 90, 50 250 0947 35, 3, 50, [illegible], 110, 10, 30 240 0948 , 200, 80, 30 310 0949 150, 30 180 0950 50, 50 100 0951 80, 30, 30, 80 140 0952 80, 15 95 2105
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J.P. Myers 1974 Flocks 2 Arroyo Chico (15,27) Estancia Medaland, 35 km S of Juan de los Andes by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 6 September (conts) So in 10 minutes 0942 → 0952 2105 estimated Zemaida flew S over this area of Estancia Medaland, whereas less than 20 flew north. #>of flocks 20 x x 10 50 100 150 200 250 flock size The graph shows that most flocks have less than 100 individuals, but that many are under 50, but that almost as many are between 50 and 100. (0,18) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Arg. 10 September see Tryngite sp. accent. See Pseudoboliste vivaceus sp. accent (15,21) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 14 September see evening in journal re upland shorebird roosting flocks. (0,18) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 15 September see Tryngite sp. accent re directional and static flock foraging modes. (15,21) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina see evening journal re upland shorebird roosting flocks. (0,13) Arroyo Chico, Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina see bairdii spp. accent re mixed flock behavior in evening [illegible] (0,18) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Arg. 17 September see journal, Tryngite sp. accent re directional vs static flocks (24,16) Estancia Medaland, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina see journal re roosting flocks 18 September see journal re roosting flocks. 20 September see Tryngite sp. accent for roosting flocks. 21 September see journal re probable effect of trapping flocks.
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J.P. Myers 1974 Flocks 03 (5,3), La Orqueta, 35 Km S. of Juancho by road, Pto de Madariaga, Provincia de Bs. Aires, Argentina 22 September see journal re fuscicollis spookinus' steel (8,12) to (14,17), Arrayo Chico, Pto de Madariaga, Provincia Bs Aires, Argentina All fuscicollis apparent re bandii / fuscicolla spp. apart, Flocks (13,13) Estancia Medelard, Pto de Madariaga, Provincia de Bs Aires, Argentina see journal re roosting flocks. (19,9), Estancia Medelard, Pto de Madariaga, Provincia de Bs Aires, Argentina 24 September see journal re mixed foraging flock of shovelnoids. 26 September details of flight approaching (19,9) roosting area: 1759 - 1 fuscicollis 1800 - burst of golden plover cells, one flying to roost area 1805 IVC = 750 ft, clouds 5% 1816 4 Tryngits going to roost 1819 2 Tryngits going to roost 1820 IVC = 350 ft; 1 Tryngito going to roost; 13 Tryngitis going to roost 1821 1 Tryngito going to roost 1822 20 Tryngits going to roost, flying low current - 2 Pluvialis d. going to roost 1823 1 Tryngito going to roost, the flock taking off, flying low, landing again 1824 10 Tryngito " " " 1825 IVC = 230 ft 3 Tryngits going to roost 1826 5 Tryngits going in. The landed flock took off, flying again ≤10m off ground, circling, coming in, landing. 8 split off 1826.5 IVC = 200 ft EVERYONE (almost) in vicinity of roost + me took off, the major Flight. Lwentup 1830 IVC = 220 ft nearby traffic (6 cars) went to roost. 1833 10 Tryngito going in 1834 15 melanotos, 3 fuscicollis going in
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J.P. Myers 1974 Flocks (1974) Estancia Medalu, 35 km S. of Juncal by road, Pte de Madariaga, Pcia de Bs.As., Argentina. 26 September (Early) 1837 - 15 Tryngite going into roost 1838 - 1 Tryngite going into roost 1840 - 2 Pluvialis IUL = 80 ft. 2 Pluvialis going into roost 1842 - 6 Pluvialis going in 1845 - Sun on horizon. - roosting flock appears to segregate by species. Peck's going towards H2O. 1846 - roosting flock spread considerably (has been going on for some time). area 50 m wide 1847 - 5 Tryngite, 5 Pluvialis going in 1848 - 2 Pluvialis, 5 fuscicollis 1849 - 2 fuscicollis, 5 Pluvialis 1850 - a tremendous flock of Pluvialis approaching from WNW. nearby (to car) territorial Pluvialis flying in. Over 200+ Pluvialis going in now. IUL = 50 ft 1855 - 5 prep. IUL = 20 ft ' 10 Pluvialis 1856 - buffies using drier area, sensing to forage. 1910 - a few birds heard occasionally overhead still, but most movement stopped. moon: 2/3 full. Aside from roost. Chauna flying in just before 2000 I began to try and spotlight roosting birds, using the car head- lamp and a butterfly-type net. The birds were very easy to find - quite visible as they crouched or sat against the ground. The roost has several different micro-habitat types: Fence Cattle trod Area w/o water Polyborus nest Tule Open water Fence Cattle trod Area w/o water 3" spurge with thick underlying short grass Ant-hills Rised hill w/ Solanum 25 m ->
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J.P.Myers 1974 Flocks (19.9) Estancia Medaland 35 kms. of Juncalco by road, Ptdode Malariaga, Proia d Bs. Aires, Argentina 26 September (cont'd) open water- up to 8" deep near the Tule pabels Cattle trod areas - livestock have created areas of great micro-topographical relief by walking in short grass, flooded areas. It creates gymnosai: raised area covered with short grass holes, 3"- 8" deep From above w/ water means that the holes are filled + some of the tops submerged w/o water means that only some of the holes are filled + none of the tops submerged. a higher piece of ground than w/ water 3" sparse edge etc. - w/o or w/ cattle trodding, generally in/out. higher than the former categories .- Some cattails along the higher edges. individuals of a given the birds were segregated - species tending to be with one another and in subareas of the total point. obvious habitat preferences: Tryngita - most in the apparent higher, 3" sparse edge type. a few in "cattle trod w/o water." - Definitely a close to one another in tight groups, although solitary individuals not uncommon. Fluvialis dominica - in both types of "cattle trod" areas, preferring (it would seem), w/o water, although extending well into w/ water melanotus and fusicollis = difficult to distinguish because they would fly. (The best approach is by sound, they stick along the edge of open water and into cattle trod w/ water, perhaps some w/o. The reason why they fly is that in order to approach I have to go into areas and make a lot of noise.
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J.P. Myers 1974 Flocks 06 (13,14) Estancia Wiedeland, 35 km S of Tandil by road, Ribo de Madinaga, Provincia de Bs As, Argentina 29 September (see journal) 1806 - 12 buffin going west toward (13,14) region 1810 1VL = 350 fc flock of buffins air (11,13) favoring 15 goldens flying towards La Manga spotted by horses, clouds 20% slight S. wind temp = 11. 1815 1VL = 500 fc 1819 5 bairdi flying south, high, calling 1820 1VL = 400 ft cup display in buffins air (11,13). call 3-5 seconds. 1825 1VL = 300 fc 1828 Flock of buffins landed near (11,13) - there I'd been watching probably 1830 1VL = 260 6 buffins flying into Solanum by car. chased off by buckles continued to fly over field in circles, eventually working to (11,13) flock as they went over, the landed birds flew up + joined. Then 8 more went air from ? making a total of 30 landed in Solanum again; chased out 1835 1VL = 260. Buffins still flying over field, going between 2-3 acre circles each, usually slow but occasionally up to 20 m. 1836 9 more social them in flight. Flock <1m over ground. 1838 landed 1840 1VL = 200 fc golden calling. I've seen several Asia hunting in the area today 1841 golden calling big flock over old plowed field. couldn't follow 1845 1VL = 100 fc. 9 WR going over toward La 19,9. 1849 more goldens calling sun on horizon. many storks flying. many goldens - several hundred flocks of small peeps. 1850 1VL = 32 fc.
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J.P. Myers 1974 Flocks (23,16) Estancia Medaland, 35 Km S. of Juancho lay vond, Pro de Madariaga, Prcia da Bo Aires, Argentina 2 October see Tryingito ap acut re roost raiding aft 1830 - for Tryingito. 5 October 1800 - already several hundred storkbirds live in the roosting area - many Pluvialis (200?) and at least 100 Tryingito. At 1830 we are seeing small flocks of Tryingito flying in mostly from W (0,18 region?). They come in very low, no more than 2 m off ground, and land with little fanfare or fussing. Some fly loops over the area. Birds are foraging. Have also seen a courting display by a Tryingito. 1900 - shortly after sunset (5 min ago) the flocks began flying - a tremendous flight going up to 20 m altitude initially. Many appeared to have gone off to the east. They flocks could be seen flying for many minutes after the main take off - looping around a few m off the ground. Golden appear largely to be leaving but many Tryingitos have returned (at least 200 accumulated in the field prior to take off). I was able to follow one group of 100+ until dark. At 2000 we advanced upon them and started to net them, stopping when we reached the immediate area of the roost, and planting these nets: tower llaw's fence [sketch: roost area with nets, tower, vond] we then circled around the flock + tried to herd them into the nets - they didn't go - barely missing. If I had not been suffering from a horsekick we would have placed more nets in which event I am positive we would have caught some. They behaved as the other night - allowing us to approach (tonight closer - less than 2 m because of no moon) and then fluttering up + away in a tight group. (23,16) Estancia Medaland, Pto de Madariaga, Prcia da Bo Aires, Argentina 7 October observing flight into roosting period windward! 1830 - 1VL: 500 2&WK 1pect 3golden
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{ "text": "J.P. Mycue\nFlocks\n09\n\n(23,16) Estancia Meiland, 35 km S of Juanico by road, Pibo de Madariaga, Pcia de Bs. Aires, Argentina\nin the immediate area. I suspect that the large 200+ member flock of pugs seen off to the NW\nalong the fence at 18:50 was mostly fascicillis. The roost appeared anomalous.\n\nSpartina\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [TRANSCRIPTION_TRUNCATED_DUE_TO_LOOP]
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J.P. Myers 1974 Flocks 10 (22,13) Estancia Medland, 35 km S. of Trencha by road Pto de Madariaga, Provincia de Bs. As., Argentina 8 October cont'd 1810 IUC = 1300 2pct 1gp [see Gallinago sp acent] 2wr 2 LYL 1815 IUC = 11500 1gp [Sampled # of birds preening vs feeding in roost: Peets. 12 feeding 3 picards we 4 feeding, 2 preening & still some territorial pecko + LYL] 12 LYL taking off 2 Himantopus 17 peets 2wr 1820 IUC = 1000fe 2wr 10pct 7pct 1825 IUC = 750 7LYL 5 micro 1gp [landed flock in roost takes off, flies up and around. Pectorals calling loud. - going down into same place, began as a LYL called + flew.] 10 wr 3pct 1830 IUC = 380 3pct 5pct [some peets going from Southern roost area over fence to Northern] 1pct 2LYL 17 Micro 1pct 4wr 1835 IUC = 380 9 wr 2wr 1gp 15 Micro 1wr 1wr (whitfling) 4 Tringa f 3wr (flying up + gliding back in); flock 1840 IUC = 300. 2 Van 25 wr 6 pect 1wr [Tringa 2 micro lwe, 2 Tringa f 10pct 3gp 4wr 1wr 8 pect 1pct 1wr (wr coming in from direction of arrow.) 1 Van 1 Van 7pct 1845 IUC = 210 1LYL 2 buffic 1pct, (Considerable non-ss aggression in roost) [ # of birds preening vs feeding: Peet 3 feed 4 pleen WR 6 pleen 5 feed ] - some many are alternating feeding + preening without moving. 2gp 2wr 3 wr 2wr (6pct 1pct 20peeps 1850 IUC = 800 95 1bards 2wr 5 pects 2 pects 1wr 1 [illegible]wr 2wr 4 wr 10 wr 1wr 1wr 3pct 5pct birds flying from roost, going round, some breaking off + coming down but most coming back. 1 LYL
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JPMycus 1974 Flocks (22,7) Estancia Medeland, 35 Km S. of Juandia by road, Pto de Madariaga, Proin de Bs. Aires, Argentina - 8 October (cont'd) 1855 VLC=65 (ure + 1 band) 1 EYC 6 ure (flock decor flown in fairly) Milvago passing over - split up + circled back, mostly W-E - less than 2/3 flew. 1gp 3 Hinaelopus 3 pairs 1gp 7gp Sunset → ~1855 1900 VLC=16 15 gp 1gp 1gp 4gp 1pct 11gp (birds still feeding within roof) 4gp 3gp 1gp 1gp 4gp 10 ure 1 Wilsons 7gp 5gp 1905 VLC= [illegible] 3gp + 5 buffic 13 gp 5 buffic + 7gp 2gp 3gp 8gp 12gp (the 9p are landing now) 4gp 2 Van 4gp 2gp 4gp 1910 VLC=6 7gp 2gp 1Van 1gp 1gp 2gp 1 Van 3gp 30 ure 9gp 3gp 10 peeps 8gp 1915 VLC=2 root (largely CWR, also Aras sybillatus places) we still feeding. 7 bird's 1917 most birds preening. 1gp 1gp (gps still calling) 1920 VLC=0.5 Vanous. 10 gp. On our way out we found a flock of ~30 gp rooting about 170m behind us, also at least 10 gp rooting in the old grid 9 area by the farmhouse. The flights into the rooting area came mostly up from the SW along the spartan, this was particularly true of Prividali, many of which followed a break-in-the- pattern which led into the coast. (to see journal + sighting records for totals) (3,11) Estancia Medeland, Pto de Madariaga, Proin de Bs. Aires, Argentina 9 October 1735 VLC= [illegible] 2 Bands See journal 1740 VLC=1200 ft 6gp 1745 VLC > 2000 3gp (1 buffic, 4 Vanellus, 51 gp clearly landed in area) 2gp 3gp 1gp 13gp Plotted in grid 15 data book
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S.P. Myers 1974 Flocks 12 (3) Estancia Medaland, 35 km S of Juncalho by road, Pto de Madariaga, Provincia de Bs As, Argentina 9 October (contd) 1750 IUL= 1200 1buffie 1755 IUL= 1200 1gp 27gp 55 buffie 1gp 2buff 1800 IUL=700 fc 12 buffy 1gp 1bf 1805 IUL= 800fc 2Van 2Van 5 bff 3gp (50 birds taking off from 0/18 + coming high this way - but disapeared within 1-2 min + went out from view) -1gp 1gp 1810 IUL= 600fc 1gp 3gp 1gp 3gp 1gp 5ap 4gp 30 buffio 3gp 10bf 1815 IUL= 350fe 11 bf (came in firm NW, dropped in low formation (so low we lost them below the bowl, and then a minute or two later appeared shooting out of the drainage ditch near Hucan-which leads from the p. Arrayo out to the SE parallel to the fence. going towards La Manga) - went down in 6/12) 3gp 3gp 2Van, 3Van 1gp 4gp 3gp 1gp 3bf 8gp 1820 IUL= 300 8 bf 25 bf 2gp 51g 2gp 14gp (the app. gp + bf seem to be splitting up + going into two areas - the SE part of Turner llanos and around here in 7/11.) 1825 IUL= 350 1Van 1Van 3gp 8gp 18SBS 2gp 5by 5 bf 4bf (Wind hit, suddenly picking up from S. It had dropped from mot NW to 2 Nothing, remaining calm for last 20 min & suddenly whom!) 1830 IUL= 260 strong S wind 1 bf. 3 bf (most buffio landed in Tilaro - feeding, some displaying, some aggression) 27 bf 5bf 1bf ((7/11) birds took off went to SE part of Turner llanos) whirling 1gp 6 bf. (big flock coming out from other side of Arrayo - drop- ning in - coming up in drainage -) 55 bf that flock. (Flying <1m above ground across Tilaro. - 2 papa (buffio) landed near Solanum patch where we cross the drainage ditch.) 1835 IUL= 210 20 bf 3bf. (another big flock coming up 'chute') 26 bf
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J.P. Nylors 1974 Flocks 13 (911) Estancia Medaland, 35km S of Junincher by road, Pto de Malanaygo, Provincia de Bs Aires, Argentina 9 October (confid) 1835 (cont'd) 31 bf (coming down chute) 1gp (the 'chute' is the flight path which the buffles coming from NW are following, as described earlier. They continue on to ~ (11,10) where a big flock appears to be accumulating.) 10gp 2gp + 23bf (These buffles too come down chute) 15 bf (chute) 10 bf (chute) (Some variation in route - they are also going along the edge of the plained ground. 13bf + 3gp 1840 * VLC = 150 1gp 2gp 6 bf 8gp 2bf 1bf 6bf 30bf (chute) 10 bf (chute) 1845 VLC ~ 80. (Hundreds of bf whirling over (11,10) region - an incredible flock-group whirlfle. Danting. - spread over at least 100 m. The flock falls into a chain of luminous more whirling than WR) 1gp 1850 VLC = 45 3gp temp down to 13° - a drop of 10°C since 1735- 1gp 1gp 6gp 2gp 1gp 1gp 27gp 1gp 1barni 1gp 5gp (-goldens appear to use chute too) 1gp 2gp 2gp 1855 VLC = 40 2gp 6gp 2gp 6preps 3gp 2gp 2bf 10gp 2gp 1gp + 12gp (following topo lines) 2gp 3bf 1gp 3gp 15gp (chute) 4gp Sun set 1900 VLC = 20 1gp 1gp 1gp 1gp 2gp 6 [illegible] Heimantaro> 1905 VLC = 8 2gp 2gp 4gp 3gp 1910 VLC = 4 1Van 1915 VLC = 2 — plotted in grid 15 data book (11,10) Estancia Medaland, Pto de Malanaygo, Provincia de Bs Aires, Arg 13 October 1730 VLC = 500 59 journal Temp =16 1735 VLC = [illegible] 600 7 people
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J.P.Myers 1974 Flocks (11,10) Sotania Medaland 35 Km S. of Jujancho by road, Ptdo de Medaniaga, Pcia di Bs As, Argentina 13 October (cont'd) 1740 IUL: 500 1 buffy 7gp 1gp 1745 IUL: 500 25 bf 3gp 1750 IUL: 700 3bf 1gp 1755 IUL: 500 4bf 7bf 1800 IUL: 380 15 bf 25 bf 6bf 1805 IUL 320 6bf 1gp 1810 IUL: 320 4bf 1gp 1gp 4 bf 6bf 1815 IUL: 260 8bf 15bf 15bf 1820 IUL: 260 4bf 2bf 10bf 2bf 1825 IUL: 300 1bf (only 24 bf in roost area now) + Huananotus 1bf 1830 IUL: 260 18bf 8bf 1gp 1gp 1835 IUL: 180 23bf 25pam 2bf 1gp 1gp 29bf 27bf 1840 IUL: 80 11bf 3bf 2bf 25bf 19bf 1gp 4bf 1845 IUL: 50 15bf 1bf 1bf 6bf 4bf 1bf 1bf 18bf 7gp (lapin stealing to whirl above roof - now in small groups) 22bf 14bf 45bf (there is a very tight-laced flock of bf in the roost - much activity within it, everyone wobbling around with neck extended - 58 numbers in ~ 3.5 x 3 m) 8bf 15bf 1850 IUL: 76 (Ging 30bf 3bf 20bf 1gp 1gp 12bf 5bf 1855 IUL: 10 2gp 5bf 4gp 1gp 6gp 1gp 6gp 1900 IUL: 4 2gp 1gp 1gp 2gp 25gp 4gp - 1905 IUL: 1.5 (raining) it was apparent however that some birds were still flying: 1) we saw them, probably goldene. 2) we moved to another point, and 1.5 hours later left for camp after a steady rain began. retracing the gorge taken 15 hours before we came across
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J P Myers 1974 Flocks (11) (a) Estancia Medaland 35 km S. of Juncho by road Ptdo di Madrelego, Avia de Bs. Aires, Argentina 13 October (cont'd) a small group of roosting golden which could not have been these cantior because we flown directly over their roosting position. So on a cloudy days, golden come into their roost after dark. 14 October arrived in 11:00 at [illegible] 1840, too late to make any meaningful counts. However, we easily located the several roosting buffy flocks, in approximately the same positions as yesterday, although the main area may have shifted 100m or so to the N. Paired ~50 cm from a smaller flock, and attacked them first with light + net once it was dusk enough (see jour) first approach was from upwind, which was probably a mistake. The birds were obviously blinded, but seemed to be relying cueing on my auditory production and especially on the sound of their neighbors following away. The buffies were roosting on the ground, generally (but not invariably), in shallow depressions. Many were simply in the open on exposed dirt, frequently near + downwind from bits of vegetation. They were markedly clumped, often as close as 10-20cm from one another in small groups of 3-6-10. Occasionally when birds spotted because of the light, some remained. [illegible] Once I heard this whenever one would fly as I wandered about I would search the area very carefully from whence it flew, and usually find more flocks. They flew towards me, irrespective of the wind. One actually hit my net as it flew over (I began holding it up as soon as they started taking off.) The two buffy flocks which I found were spread over ~20 x 10m and 50 x 20, respectively. I found one golden flock near the first buffy flock. Interestingly, individuals here were much more spaced than roosting buffies. I never saw a golden closer than 1m to the next, and they were usually 2-3 m apart. They were also much more visible than the buffies, mostly because of size + color. None of the roosting sites used here to night possessed the contorted topography of previously seen site (which had been frampled by cattle (see 26 September)). This may be important in causing the much greater spacing between golden tonight as opposed to those other nights. The two species roosted in separate flocks.
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J.P. Myers 1979 17 October (cont'd) (23,7) Estancia Medaland, 35 Km S. of Juancho by road, Pto. de Madariaga, Provincia de Bs. As., Argentina: usual - down the Arroyo to 8,13, through Vm 9,10 gati, + then along the road.) Of particular interest were the large number (25-30? - large considering poor viewing condition) of golden ochrets were dispersed in small roosts and even, in the Arroyo, a few solitary individually they were flocking in (20,18), (17,14), a few along the Arroyo, and even some as (8,4). Many Vanellus roosting along the length of the Arroyo, particularly in (13,24). A pair of chicks in (9,14) (8,11) Estancia Medaland, 35 Km S. of Juancho by road, Pto. de Madariaga, Provincia de Bs. As. 18 October 1740 IVC = 2300 fc 1gp 1Van 1gp 1745 IVC = 2300 fc 1gp 1Van 1gp 1Van 1750 IVC = 2200 fc 1gp 1Van 1Van 1Van 1gp 1755 IVC = 2000 2Van 1gp 1gp 1gp 2Van 2Van 1Van 1800 IVC = 2200 1gp 1gp 8buf 2Van 1Van 1Van 1805 IVC = 2000 1Van 1gp 1gp 2gp 1Van 1gp 1gp 2gp 1gp 1Van 1Van 1gp 2gp 2gp 1gp 1Van 1gp 1810 IVC = 1600 10 Trianga 2Van 1Van 1gp 1Van 1gp 1gp 1815 IVC = 1600 1gp 1gp 2Van 1gp 1820 IVC = 1500 1gp 1Van 1Van 1Van 3gp 1gp 1gp 1gp 1825 IVC = 1450 1gp 1buf 1buf 1hianu1gyrs 4½/16of 1peep 14 buf 29 buf 1Van 1gp 1buf 1830 IVC = 1300 1buf 7gp 16buf 1gp 10buf 1gp (buffalo are using the chute but move to the north or several hundred in to the south, following the edge of the p[land] [sic]) 1gp 4gp 3gp 1gp 5buf 1gp 1Van 1Buf 1Van 1Buf 1835 IVC = 1000 2gp 16buf 2buf 1gp 12buf 4buf 7buf 11buf 15buf 1Van 1buf 1gp 1840 IVC = 450 1gp 15buf 16buf 26buf 1peet 1gp 6buf 1gp 9buf 26buf 12buf 14buf 16buf 8buf 8Van 7gp 1gp 1Trianga f. 1845 = 260 8buf 11buf 4buf 3Van 1Van 1Van 1gp 2peeps 1850 IVC = 160 4buf 3Micro 3peepa 16buf 3gp 5gp 7buf
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JPMylrs 1974 flocks (811) Estancia Medaland, 35 km S. of Juancho by road, Pto de Madariaga, Provincia de Bs. Aires, Argentina 18 October cont'd (855 120-IVL 8 buf 1 Van 1gp 3 buf 2buf [A cinereous harrier eating juveniles house) 40 gp 4 gp 1 gp 2 Van 1 gp 3 Van 5 Hg 6 gp 1gp 3 gp 5 gp 1 gp 2 Van 2 Van 1 gp 1 gp 1gp 1900 IVL=65 7 gp 2 gp 15 gp 6 gp 7 gp 3 gp 1 gp 4 gp 3 gp 2 gp 1 gp + 1 pCT (8) 17 gp 3 gp 1 gp 4 gp 1905 IVL=50 2 gp 6 gp 1 Van (1906 sou on horizon) 1 gp 5 gp 7 gp 9 gp /4 gp 6 gp 1 gp 4 Van 1 gp 1 gp 2 gp 1 gp 2 gp 5 gp 5 gp 4 gp 1 Van 1 gp 5 gp 3 gp IVL 1910 IVL=20 5 gp + 7 buf 1 gp 1 Van 1 Van 4 gp 1915 IVL=8 1 gp 1920 IVL=3 3 buf 3 gp 5 gp 1925 IVL=1 1 gp 6 gp 2 Van 1930 IVL=0.13 instead of using the chute this evening the buffalos were flying across the Arroyo in (6,13), following the fence across the plowed field and crossing it in (10,9). Although it looked as if some were roosting in the (11,10) region, most were continuing on. A thought (occurring in the heat of observation) — what is the excessive leq- covariance of golden? a result of their spacing system (very even, wide spread) — i.e., contrast them to quiet buffalos — it may be that the increased vocalness is a means of counteracting the problem-problems inherent in a more dispersed system — by the vocalization maintain the ability of the golden to take advantage of N eyes looking out for predators — they coalesce when a predator appears. etc. linear grid Estancia Medaland, Pto de Madariaga, Provincia de Bs Aires 4 November see today's journal re linear grid sample + WK under dispersin. Also see WK sp accent.
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JPMyers 1974 Flocks (8.11) Etania Wodeland, 35 km S. of Trencher by road Pto de Madaranga, Precio de Bs. Aires, Argentina 6 November contd 1905 IVC=14.8 10 bnf 8bnf 2bnf 1brf 1brf 2bnf 26 bnf 27 bnf (elude) 4 bnf 3? gp 1 bnf 2 Van 1gp 1Van 2bnf 1 bnf 15 gp 1910 IVC=14 22 bnf 15 bnf [illegible] Eba 2gp 3 Van 1 Van 3 bnf 1gp 3gp 1 Van 15 bnf 1 bairds (Van 1 Van 3gp 1 bairds 2gp 1 Van 2gp 2 Van 13 bnf) 1915 IVC~13.9 7 gp 4 bnf 1brf 1gp 1gp (Van 2 Van 8 Tringa 1 Van 3 gp 1 bnf 1brf 1gp + 20 gp 32 gp 3gp 1 Van 3 Van 1gp 1gp 1 Van 1gp 1gp 2 Van 2 Van 1 bnf 4 gp 3 Van [illegible] 1920 IVC~13.3 1gp 1 Van 1 Van 2gp 1hy 5 gp 1gp 2gp 1925 IVC~12.6 4 Hy 3Hy 9 bnf 1gp 1Van 2 Van (gp supplanting on plowed field) Sun [illegible] set N 1927 1wr 6 Hy 3 gp 1gp 4 gp 1gp 1gp 1930 IVC=12.0 2gp 5gp 2gp 2gp 2gp 2gp 3 Van 2gp 4gp 5gp 1 BNS 4wr 3gp 1 Van 6 gp 3gp 1gp 3Van 1gp 1gp 2gp 1935 IVC=11.0 4 gp 2gp 1gp 1gp 9 gp 1gp 1gp 2 Van 1 Van 1gp 3gp 4 gp (Van 3 bnf 1 Van 1gp 3gp 1gp 6 gp) 1940 IVC=9.6 10 gp 2gp 6gp 5gp 1gp 4 gp 1gp 2gp 12 gp 1gp 1gp 4 1945 IVC~8.3 1gp 4gp . (It now becomes impossible to see. However, there are still goldwings foraging, supplanting, dispersed [illegible] Etania Wodeland [illegible] [illegible] [illegible] [illegible] 17 November here we go again - same site, same business, same general vegetation 1800 IVC=17 2bb 2bb 1gp 1805 IVC=17.35 wind strong W +19° clouds~60% 1 lap 1bb 1bb 1bb 1gp 1 gp 1 gp - Single flock of buffle <25 m away, supplanting + Thrush, providing a broad view of buffle flying 1810 IVC=17.4 1gp 1bb 1gp 1bb 2 Tringa 1gp 1815 IVC=18 1gp 1gp 2lap 1bb 2bb 1bb 2 Stenopanax 1820 IVC~16.6 1 gp 1 gp 2 bb 1bb 1 gp 1 gp 2 gp 1 gp (gp 1 gp 3 bnf 1 gp 1 gp
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J.P.Myao 1974 Flocks (811) Estancia Medaland, 35 km S. of Tucumano by road, Pto de Madariaga, Provincia de Bs Aires, Argentina 17 November (conf'd) 1825 IVC = 16.3 1bb 1bb 1bb 1bb 1bb 4bb (Chute) 6gp 1bb 1gp 2bb 1gp 1gp 1830 IVC = 16.2 1gp 3hty 1gp 1bp 1lap 1gp 2gp 1gp 1bb 1bb 1bb 1gp 2bb 1gp 1bb 1bb 4bb 4b 1gp 1bb 1gp 2bb 1gp 1835 IVC = 16.7 1bb 2bb 1gp 3bb 1gp 6 Micropalarna 1bb 1bb 8bb 1bb 2gp 1bb 2bb 10bb 2bbs 1gp 4bb 2bb 7bb 1gp 2gp 1gp 1gp 3gp 4bb 1gp 1840 IVC = 17.7 1bb 1gp 2bb 1gp 1gp 1gp 1gp 1gp 1bb 1bb 1bb 1bb 4 3gp 1gp 1gp 2bb dear 1845 IVC = 18 1gp 1gp 1gp 1bb 1bb 1bb 1bb 2bb 3bb 1bb 1bb 1bb 1bb almost supplementing around him (all the solitary buffalos) may be ten. no wing flashing but 1 taildown 1gp 1gp 6 WR 1bb 1850 IVC = 17.8 1bb 1bb 1bb 2bb 1bb 1gp 1bb 1bb 1bb 2gp 1gp 1bb 1gp 1gp 1gp 1855 IVC = 17.6 1bb 1gp 1gp 2bb 1gp 1gp 5bb 1bb 1bb 1gp 1bb 1gp 1bb 1bb 1gp 1gp 1gp 1gp 1900 IVC = 17.2 1gp 1bb 1gp 1gp 1gp 1gp 2bb 1gp 1gp 2bb 1bb 1ty 2bb 2bb 1bb 3bb 1905 IVC = 16.8 1bb 1lap 4bb 1bb 1gp 1gp 2bb 1bb 4bb 2bb 1bb 1bb 1bb 1gp 1bb 1gp 1910 IVC = 18.5 1gp 1gp 3gp 1lap 3bb 12bb 1bb 3bb 1lap 1bb 2gp 3hty 1gp 1gp 1gp 1gp 1gp 1gp 3bb 2bb 1915 IVC = 16.0 1bb 1gp 1bura 1gp 6bb 1bb 5gp 8hty 2bb 2bb 1hty (buffalo boundary in plowed field in (B.B)) 1gp 4gp 2bb 1bb 9bb 2bb 1gp 1bb 3bb 1bb 1gp 1bb 1920 IVC = 15.4 1gp 1bb 15 Micro 1gp 1bb 1bb 1gp 1gp 1gp 2hty 7bb 4bb 1gp 2 WR 1gp 1bb 1bb 6bb 1gp
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S.P. Myers 1974 Flocks (7,12) Estancia Medaland, 35 kms. of Juancho by road, Pto de Madariaga, Pcia de Buenos Aires, Argentina 28 November (cont'd) 1855 IVC=16.4 lap lwr 1bb 2gp lwr 1gp+2wr +Waffi 1ba lwr 6 wr 1ba 6bb (There is supplanting by buffalo going on now in old fallow field (less than 40 m to deer S.) 1bb lwr lwr lap 5bb Supplanting 1900 IVC=16.4 lwr 1ba 2bb 3gp 1bb 2lap lwr 6 bb 1bb 1bb 3wr 1905 IVC=15.9 1bb 2gp lwr 6 bb 4 Hg 11 Hg 1lap 1bb 3bb 1910 IVC=15.8 4bb 1lap 1lap 1gp lwr 4 3bb 1915 IVC= 15.8 1Hg 2lap 3bb 1wr 2lap 1bb 1gp 1gp 1gp 1gp 1Hg 1920 IVC= 15.5 40 bb 3gp 2bb 1lap 1bb 1gp 1925 IVC= 15.3 5 Hg 7Hg 31bb 2bb 6 bb 20 bb 1gp 1930 IVC= 13.8 14.8 (full moon rising) 1Hg 1lap (wr 1bb 1bb 9bb 4bb 8bb 3ba 2 Hg (a sizable flock of godwits in collecting below us in the stream) 1 lap 2bb 1bb 4bb 1lap lwr 7bb 1935 IVC= 14.6 1ba 3bb 1bb 6bb 2bb 1Hg 1bb 1bb 2ba 1ba 3WR 1940 IVC= 13.8 1bb 3wr+2ba 6 peeps 27 Hg 1gp 1ba 1bb 1ba 1945 (sun almost set, moving behind heavy cloud (or bank) IVC=13.8 2wr 7 wr 1gp 1ba 1Hg 5bb 2bb 7gp lwr 5 wr 5ba+2wr+1Aracaria 1949→ sun on horizon 1lap 9 Hg 1bb 1gp 1gp 1bb 1950 IVC=12 1Hwr+1lap 1lap 1gp 1Hg+1gp+35 WR (wr going downstream) 1gp 1Hg 1gp 4Hg 2Hg 1ba 2wr 2lap 6 feet 3wr+1ba 1gp 1955 IVC= 11.3 10 wr 2lap 1gp (wr 1gp 2gp 28 Hg 2000 IVC= 10.2 4wr 1gp (not only have godwits yet to appear en masse, but they are still supplanting & foraging) 1gp 1Hg 1gp 2005 IVC= 8.9 1gp 1Hg 1gp 1trindar f 1gp (godwits still supplentating) 1gp 2wr 2wr 1gp 1Hwr 1lap 2010 IVC= 7.7 1gp
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JPillyers 1974 Nests Farmhouse Monte (10,1), Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina 7 September Colomba pigacuro one egg pile of sticks ~2m off ground in a low, juniper-type (18,189) Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina. 10 September Bolyurus planus 2 eggs, large pile of sticks, 4' diameter. 1m above water in small (5m diameter) patch of tole in a small (20m diameter) pond. rat rats on bent-over tole (2,19), Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina. 15 September Vanellus chilensis 4 eggs shallow depression/scoop 4" diameter <1" deep lined with a few pieces of dead [illegible] (old gatop pulpy stalks). nest in open field on slope, slant grass. [illegible accent]. Vanellus chilensis 4 eggs shallow scoop 5" diameter ~1" deep lined with, dead stalks of weed. nest in open field, short grass, ~25m from Spady's barn toward 125m from above [illegible] nest (11,1) Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina 18 September Vanellus chilensis 3 eggs shallow scoop, 6" diameter 1" deep, lined with dead weeds nest in open short grass field ~75m from Farmhouse Monte (21,10), Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina Hatched by 10-7 Chauna torquata ? eggs floating raft anchored to tole pall, 4-5' diameter >1' high made of branches, reeds, etc., in pond >1' deep. (9,9) Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina 29 September Vanellus chilensis 1 eggs shallow scoop ~1" deep, 7" across. barely lined with kind vegetation. fallow field, plowed 2 years ago. (1,19), Estancia (Medaland), Pto de Madariaga, Provincia de Bs. Aires, Argentina 30 September Vanellus chilensis 4 eggs shallow scoop ~1" deep 6" across. short grass field. (22,17) Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires, Argentina 8 October Bolyurus planus 3 eggs large agglomeration of twigs placed ~1' off water in thick in but near the edge of a thick stand of tole. deep depression in this nest. total structure 4' diameter, 1.5' high (26,10) Estancia Medaland, Pto de Madariaga, Provincia de Bs. Aires 16 October Turdus rufiventris 3 eggs classic thornhnut 15m off ground in quince near the main body of the tree
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J.P. Myers 1924 Nests (11.2) Estancia Medeland, 35 Km S. of Juanchu by road, Pto de Maduringa, Pcia dt 13s. Ario, Argentina 17 October Vanellus chilensis - 2 eggs - scoop inground in pig-roofed area 17cm diameter 4cm deep open field near farmluxx route 15 m from heavily used horse trail egg 1: 49mm x 36, 28.6 g; egg 2 47.5 mm x 35.5, 26.8 g; egg #3 47.5 x 39, 27.2 g; egg #4 47.8 x 39.7 mm 28.1 g 19.9 Estancia Medeland, 35 Km S. of Juanchu by road, Pto. de Maduringa, Bs. Aires Vanellus chilensis - 4 eggs scoop 14cm diameter x 4cm deep lined with Distichalis ~ 75 m from site of another suspected nest (+ ollaws in vicinity) egg #1 = 51.7 mm x 33.2, 25.5 g egg 2: 51mm x 35mm, 28.0g egg 3 = 51.9 x 34.3 mm 26.8g egg 4= 50.5 x 35 27.7g photos 19 October (3.21) Estancia Medeland, 35 Km S. of Juanchu by road, Pto de Maduringa, Pcia de Bs.Aires Vanellus chilensis - 1 egg 2 newly hatched chicks w/egg tooth, & yet damp. Brooded by adult: both adults found me. photos (19.0) Estancia Medeland, 35 Km S. of Juanchu by road, Pto de Maduringa, Pcia de Bs.Aires 2 November Bonotrichia capensis - 2 Broo eggs, 1 extraneous (presumably Melathrus) well constructed spanned cup nest on ground underneath a fallen log in the camp beside surrounded by poplar trees. (8.13), Estancia Medeland, Pto de Maduringa 10 November no nest (too late for that) but solitary Chandrius falklandicus 1 day old young chick. photos. 15 m wide sandy drible sand border to arroyo here near drainage - ditch inlet. VII December (10.13) Estancia Medeland 11 November 1 Chandrius falklandicus chick, perhaps same one, similar age. 2 adults caring for it including RvB (a bird I banded this spring). Banded it Rp (no usurper) (11.16) Estancia Medeland 14 November 2 chicks together - 2 adults. banded one RoCo and USFRIUS (see banding schedule) (4.13) Estancia Medeland 16 November Bonotrichia capensis - 2 eggs + 1 extraneous (white) egg nest on ground near fence in tall clump of grass. area is open grassland near Arroyo Chilo (25 m away). (19.0) Estancia Medeland Trogloble a day - 3 eggs in stick, grass and twig nest in can nailed onto willow tree in camp for that purpose
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SP Myers 1974 Cowpies Estancia Mielkland, 35 Km S. of Juanola by road, Pto de Madariaga, Provincia de Bs Aires, Argentina 27 April I should have started a 'sp accent' of this heading last November when I first saw 3 Hydriots around a single cowpie, all greedily plunging their bills within. Since then within the journals within spp accents of many different sp. I have recorded observation of cow pie usage by birds. Most of the observations have dealt with shorebirds - Ruff, Curlew, Godwit, Lapwing, Golden Throated, Arenaria, etc., but there have been passerines (e.g. Gecitta curicularia), Polyborus, and others making avail of that which cows so liberally leave behind. I see three general types of usage: 1) Foraging - a bird takes food out of the cowpie 2) Shelter - small shorebirds, particularly Ruffs (Ruffa), bundle with Dauricus 3) Perching sites - used for preening, for foraging (i.e. Amin lesserica) or singing (Bemotrichia). It would be particularly nice to be able to state the food items which the spp are taking, to be able to describe the decay process + at what stage individual cowpies are used, and something about the densities achieved, particularly in places and at times when there is heavy shorebird usage - e.g. when Godwits were defending territorially a set of cowpies. 25 August behind camp a pair of horneros are using cow + horse droppings for building their nest 30' up in a Eucalyptus 26 August Linedes focus, posting over a broken-up cp, presumably to find food beneath 10 September see Pseudoleistis viriscens sp. accent. 15 September Molothrus bonariensis behaving similarly to Pseudoleistis observed 10 Sept: running between cow and horse dung, quelling it over or beside and feeding beneath. Pseudoleistis there with it behaving similarly. Molothrus also perching on top of cowpie, pecking in the dung from its perch. 17 September see Oicopholus sp. accent re loud behavior. 8.0902 Anthus corneus perch on cowpies - actually, it is running from cp to cp, jumping on top as it reaches through, stretching its neck / looking around. Not feeding, neither in/on cowpie nor en route between. 29 September - a rodent? digging in a cowpie in the pampas grass (s.?) camp. smaller than a loud Crinmys, perhaps 4" + tail - reddish brown. brady eyes.
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SP Myers 1973 Camp list 10 Km E of Dolores, by road, Provincia de Buenos Aires, Argentina 22 November Ristiaice - pair feeding fledged young, 5-10 audible around teretern (4) spectacled tyrant - pair (male & playing) spotted Nothura (heard) Maguari stork (2) White faced ibis (3) 1 duck chirrango currawonga white tailed kite long winged kuruier conendecu pipit brown yellow warbler Angeleus thilius screaming cowbird (6) saffron finch 0700- 0830. - camped by road in Pampas grassland. Grass of varying height -small patches < 1" apart, but most >1'. Many fences, a big power line, groves of trees within 500 m. Small puddle in area. Intersection of Canal 5 and Rte #11, Provincia de Buenos Aires, Argentina Phalacrocorax olivaceus (8) jack tailed flycatcher Rosate Spoonbill (1) white crested swallow cliff swallows 2 ducks (2)- blue+white swallow Mitrago chirrango (5) house wren White-tailed kite (1) Conendecu pipit Southern lapwing (2) Molothrus bonariensis Golden plover (350) saffron finch buff breasted spiper (1) Zonotrichia capensis brown headed gull (30) camped in canal hollow - 100 m across, surrounded by dikes. doves - 2+sp Beyond dikes are large plowed fields. (4) this hollow - tall grass + Phuotka
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J.P. Myers (1973) Camp List Estancia Nederland, 35 km S of Tucumcara by road, Pcia de Buenos Aires, Argentina 24 November Neotropic cormorant, spotted nothura, southern screamer, Milvago chionogaster, southern lapwing, golden plover, CUR spiker, Buffy, YLego, Hgodwit, brownhooded gull, trudaun tern, rock dove, Pracuro pugion, blue and white swallow, Cernenduro pipit Molothrus op., Pseudoleistes virescens Zonotrichia camped within 50 yds of Arroyo Chico in a short grass field grazed by cattle, sheep + horses, some thistles. Strong wind from SE all night, intermittent squalls with fierce rain. 25 November Neotropic cormorant, southern screamer, white-necked keel, common egret, Maguari stork; white faced ibis; yb pitail; speckled teal; circumcantal; southern widener; siliery teal ; cocoroba + black-headed sunus, Milvago ; W-Woot; southern lapwing, golden plover; CUR spiker; buffy; YLego; Hgodwit; bh gull; trudaustern, canidit. Jouve; Spartonoica malurida, Asthenus sp.; [illegible] Phaenocrypta melanogaster, Kiskadee; speckled tyrant; Anthus crenulatus, Molothrus sp.; Pseudoleistes virescens; Agelaius flavius ; Sicalis sp. Zonotrichia. camped amidst "bunch sedge" - a 4' high tubular plant that grows in large bunches - site similar to campsite at Canal #. Also much open short grass field, with higher grass (1'+) off to W surrounding + extending beyond several large shallow lagoons (with tule ch). Clear + calm at dawn, 34°F 28 November Neotropic cormorant, spotted nothura, southern screamer, wf ibis, southern lapwing, golden plover, CUR spiker, buffy, bh gull, t-tern, Anthus crenulatus, Molothrus, Pseudoleistes virescens, Sicalis, Zonotrichia site of Nov. 24 29 November Rhea Neotropic cormorant, southern screamer, common egret, M. stork, wf ibis, b-n swan, Milvago, Swainson's hawk (400)!! , Vanellus golden plover W/R buffy, bh gull, Jouve, Kiskadee, spec. tyrant, Anthus, Pseudoleistes, Sicalis, Pampas finch, Zonotrichia site of Nov. 25. I determined birds all morning and made little effort at bird modeling
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JPMyers 1974 Camp list Epuyen, Pcia de Chubut, Argentina 12 May (contd) Chlorophaga picta - several small flocks Theristicus caudatus Milvago chimango - numm 30 Polyborus planus 3 Sparrow hawk Colaptes pitius Aphrastrura spinicauda - 5 in mixed flock Anairetes parulus 2 ↑ Trogolodytes aedon 5 Eonotrichia capensis Estancia Chacabuco, 2 km E of Paso Chacabuco, Pcia de Neuquen, Argentina 14 May Palaeornis chilensis - in Bolimay camped by Rio Lumay in Salta bordering river. Chlorophaga picta .5' Cathartes aura Geranocautus melanoleucus also found a Pteroptochos tarni nearby Milvago chimango California quail Kelp gull Aphrastrura spinicauda - several mixed flocks Cinclodes austelalbi patagonicus Leptasthenura argithalida Anairetes parulus Pyrope pyrope Agriornis livida Trogolodytes aedon Sturnella loyca Eonotrichia capensis
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JPMajors 1974 Camp list 50 Km W of Villa Mascardi by road, 300', Provincia de Rio Negro, Argentina 17 May camped on edge of moraine from glacier on Mount Tronador, beside a small stream. Rained throughout the night, and snow accumulated not too far above us (in fact some of our rain was mixed w/snow.) Nothofagus pumilio, N. antarctica, and N. dombeyi were present. The Chusquea colchica and other lower plants forming a very dense ground cover. Colaptes pitius Dendrocygnes lignaris (1) Campephilus magellanicus (3) Aphrastura spinicuda 100+ in several large mixed feeding flocks Pygarrhichas albogularis - 10 with Aphrastura Scytalopus magellanicus ± 15 Km N of El Bolivian by road, on Arroyo de los Repolles, altitude: Provincia de Rio Negro, Argentina 17 May altitude = 1800' partly logged Araucaria forest with a few undulate - interspersed Nothofagus many Rosa, a few Aristotelia magui. The bottom of the river in valley, is not wide - less than 200m across, and much if it has been cleared, probably by leaves/leaves near our camp. The river itself is ~10m across where there is only one channel. But in several places the water flows in several channels each under 5m across. Water is shallow; few pools appear to be over 30cm to 1m deep. It is a fast rushing stream, + obviously runs much higher at times of the year. During the evening of 18 May when we arrived, the rain showed signs of (melting cap - extensive cloudless patches). But about 0630 rain began again + has continued all day. Some mixed snow. Merganetta armata - 4:07-08; 3:07uv Wilhago chilango 2 Felice opanvarius ± Poregrinus fulvus 1 Aphrastura spinicuda 100+ in several large mixed feeding flocks Pygarrhichas albogularis ± - solitary Brachyloida patagonicus 20 Anserotus sp 4 Oinododo Pyrope pyrope 3
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JPMYERS 1974 Camp list 10 Km S. of Epayen by road, Ricia de Chubut, Argentina 21 May regenerating scrub forest following an old fire - Austrocedrus present (but scant), some Alerces, many Lomatia otlicua, some Rosa, some Berberis. Camp was placed near the road as it edged along the top of a sloping surface just above a deep (50 m) stream cut. 150 m up hill the slope became abrupt + rose 100 or so m to the cut of a hill. The slopes of this hill, particularly the SE and a ravine, were much more brushy than the rest of the area. Temperature at 10 AM = 2°; 100% cloud cover. We were just below the snow line - visible all around us or adjacent hills + mountains, particularly across the valley. Chlorophaga picta - 15 flying over Vultur gryphus - 6 spiralling ~8 Km down the road (+ thus technically not part of the camp list) Milvago chimango 2 Enicognathus ferrugineus 3 Glaucothorax nivium - 1 perched on dead tree near camp Aphrastura spinicauda - 2 small fledges in scrub Sylviothryothorus leucurus? - 5 (?) - very common in scrub Asthenu sp (?) ?? Pteroptochos tarnii at least 2 - loud - best call remarkable. SCNB (not dense forest) Anairete spp. (parvus?) Phrygilus sp ? Spinus sp ? Lago Futalaufquen, Parque Nacional Los Alerces, Ricia de Chubut, Argentina 22 May forest bordering E shore of large lake, ~2500'. Thick Austrocedrus forest with stands of Nothofagus, Alerces, Rosa, Lomatia, many [illegible]. Beneath some of the Nothofagus there was bamboo. Very dense undergrowth in many places, but elsewhere heavily grazed by sheep. Hidden in the forest we found a potato field. Podiceps major Enicognathus ferrugineus Pyrope pyrope (many) Phalacrocorax olivaceus Bubo ? or [illegible] (heard at night) Anairete sp Milvago chimango Aphrastura spinicauda very common Phrygilus patagonicus Fulica (leucoptera?) Pteroptochos tarnii - many Larus dominicanus Sceolorchilus rubecula (heard ?)
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JPMyrne 1974 Camplist 05 Valley of Rio Chubut, 50m N E of Paso del Río by road, Ría de Chubut, Argentina 23 May Attriplex dominated commonly in lowlands, with some Berberis ilicifolia, a few small, low clumped cactus-like composites. Most of the ground between the Attriplex is bare dirt. We camped at the base of the S edge of the valley. Climbing up less than 300' the Attriplex decreases. Some Minium speciosum appears and the Berberis increases. Some lifts of grass. Very heavily gravelly, so it would seem from the quantity of sheep sign. Two piles of guanaco droppings on the nearby hills. The river valley here is quite wide (5-10 km) cutting through what appears from the top to be an old plain, covered with lake or river or ocean sediment. Slopes are relatively horizontal, but the action of water erosion has formed an immense landscape with sharp cliff faces and a measurable -5°C at dawn 20 Guanaco sighted from the top of the valley looking South - one group of 8 and 3 of 4 guanacos. Peracoenia pennata 1 Chloephaga picta 750 - flying over in several flocks Falco femoralis 1 Alditha Eremobius phoenicurus - in the Berberis, solitary singing (like a clipping sparrow) Phagisus gayi - several flocks of 5-10 birds in Attriplex foraging on ground Fox squirrel, also in the Attriplex lowland were numerous @ 6-9 inch diameter holes, often with chewed vegetation at the opening. Golfo San Jose, 25 km N of Puerto Piramides by road, Peninsula Valley, Ría de Chubut, Argentina 25 May camping at Roger Payne's NYBS whale research base camp, on the Eastern shore of Golfo San Jose, a bay on the N. side of Peninsula Valley bordered by 100 m high cliffs. At camp the cliffs come down somewhat + there is a cove with extensive tidal sand flats (Fick #278) below a steep pebble beach. Then are occasional patches of barely visible rock coming above the sand flats, except at the end of the cove where the cliffs return to 100 m height; there the rubble of rocks is quite extensive. Vegetation along the shore is xeric scrub - some Attriplex but mostly a combination of several thorny Solanaceous shrubs - Beijin is Spanish name of one. The area has been hit by a severe rainstorm during the last 10 days and is quite green as a result. Tide was low at dawn, no cloud, a moderate SW wind.
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SP Myers 1974 Camp list- Golfo San Jose, 25 km W of Puerto Piramides by road, Peninsula Valdés, Provincia de Chubut, Argentina 25 May Spheniscus magellanicus - many dead on beach, 2 alive Podiceps major 1 Diomedea melanophrys - common, 5 seen in 2 minute at 0930. Macronectes giganteus 1 Puffinus griseus - 50+ offshore Phalacrocorax olivaceus - 20 Ph. atriceps - 1 or 2 Ph. albireus - 3 Phoenicopterus ruber 20 (4 juv) flying overhead Buteo A polypodoma 1 Falco sparvius 4 Haematopus palliatus 3 Charadrius falklandicus 12 Calidris alba 1 Larus belcheri 5 (?) Larus dominicanus - 100+ Larus maculipennis - 5 Sterna maxima - 1 close Sterna sp - 100+ feeding way offshore Asthene patagonicus 2 Minus patagonicus 5 Phrygilus fruticeti - 20 3 guanaco, many caribou, skunk (?) tracks. 26 May Spheniscus magellanicus - many dead on beach 2 alive Pterocnemia pennata 5 Diomedea melanophrys Phalacrocorax olivaceus Ph. [illegible]
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SP Myas 1974 Camp List 07 Golfo San Jose, 25 Km W of Puerto Piramides by road, Peninsula Valdés, Pcia de Chubut, Argentina 26 May (cont) Chloephaga picta Haemotopos palliatus Charadrius falllerlandicus Calidris alba Chionis alba Larus dominicanus Larus maculipennis Sterna sp. Upucerthia dumetaria Asthenes palagonicus Minivius patagonicus Phrygilus fruticuli guanaco tracks, 2 fox, 2 Patagonian hare, many cairns 27 (May) Spheniscus magellanicus -20 Podiceps major -5 Diomedea melanopelis Phalacrocorax olivaceus 50 Ph. albiventer 200+ Ph. atriceps ~20 Chloephaga picta ~30 Lophonetta specularioides 2 Tachyeres sp (♀) 2 dark will, very large Haemotopos palliatus 15 Charadrius falllerlandicus 200+ Calidris canutus 110 Calidris alba 25 Calidris fuscicollis 1 *
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SP Myers 1974 Camp list Golfo San Jose, 25 Km N of Puerto Piramides by road, Peninsula Valdes, Provincia de Chubut, Argentina 27 May (cont'd) Larus dominicanus 30 100-200 Larus maculipennis - 50 Sterna spp. spp. Asthenea patagonica Opocerthia dumezuriana Munius patagonicus Estancia Medland, 55 km S of Juancho by road, Pto de Gual J. Malariaga, Provincia de Bs Aires, Argentina 2 June camping in our old campsite in the woods surrounding the farmhouse buildings. This monte is ~300 x 300 m and mostly eucalypts, although around the SE, E borders there is a considerable stand of poplar ('alamos'). In parts of the monte there are oaks, quince, figs, and several small stands of a few species of conifer. Also, for example at our campsite, there is Salix. Most of the deciduous trees are well along the leaf-losing process. Outside the monte are a number of different vegetation types; which one is encountered depends upon the direction of travel. See Journal 1 June for a description of the pampa grass to the east as well as a list comparable to those in this [illegible] camp [illegible] Another direction one finds different communities of grass ranging from a [illegible] growth to the S + SW to short grass mixed with stands of Selanium (Duragnillo) - areas which in winter times are filled with water (+ in fact saline) and Grind #1. A large Spartina stand begins ~150 m to the W. Temperature at dawn (1400) was 7°C. Intermittent rain and a strong S wind. We walked to the W + then around the N side; most of the walk was within the monte or at its border. Ardea cocoi (roosting in Eucalypt) Vanellus chilensis 25 Cinclodes fuscus 20 Chauna torquata 210 Larus maculipennis 1 Furnarius rufus 10 Anas flavirostris 4 Columba picaroro 50 Leptasthenura platyura 2 Anas sp? 20 Zenaida auriculata 200 Anumbius annumbi 2 Cygnus melancoryphus Leptotila verrauxi 3 Machetornis rixosus 1 Polyborus plancus 2 Guira guira 10 Speotyto cinicularia 1 Pitangua sulphuratus 5 Milvago chimango 20 Colaptes campestris 5 small on 10 el tyrant
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SP Myers 1974 Camp List Estancia Medeland, 35 Km S. of Juncalda by road, Pteb. & Genal. J. Madariaga, Pcia. de Bs. Aires, Arg. 2 June cont'd Seropophaga subcristata 1 Hymenops perspicillata 2 Mimus saturninus 4 Passer domesticus 50 Troglodyte aedon 4 Turdus rufiventris 3 Sicalis luteola 30 Pseudoleistes virescens 50 Polioptila dumaicola 2 Lonchotrichia capensis 50 Agelaius thilius 10 Geothlypis acquinoctialis 2 3 June same location - weather broke and today dawned clear at 3°C, local patches of frost within 1 km monte. Birds listed below were seen in the monte itself or off to the N., while I walked through tule, Spartina and very thick grass. Ardea cocoi Euxema maguari 5 Furnarius rufus 10 Malothrus bonariensis 1 Chauna torquata 10 Lestes thetis platensis 2 Molothrus bonariensis 1 Cyanocorax melanocephalus 24 Phleocrypta melanops 5 Aphelion thilius 15 Anas versicolor 6 Synallaxis sp. 2 Geothlypis aquinodichis Anas georgicus 15 Asthene sp. (chestnut patch) Passer domesticus 50 Anas flavirostris 20 Asthene hudsoni (?) 5 Sicalis luteola 25 Circus buffoni 2 Spantonia malvoides 10 Spinus magellanicus 10 Elanus leucurus Satrapa interophrys 1 * Phrygilus gayi 1 Milvago chimango 20 Machlornis vixus 4 Embernagra platensis 20 Polyborus plancus 5 Pitangus sulphuratus 10 15 Lonchotrichia capensis 95 Vanellus chilensis 20 Lessonia rufa 4 Oreopholus ruficollis 2 Tachuris vulpinastra 1 Larus maculipennis 30 Seropophaga subcristata 6 Columba picacuro 50 Tachycineta (leucorrha) 9 Banaida auriculata 200 Cistothorus platensis 1 Leptotila verreauxi 4 Troglodyte aedon 10 Guira guira 10 Mimus saturninus 1 Colaptes campestre 2 Turdus rufiventris 5 Chrysopitus melanolaimus 5 Polioptila dumaicola 8 Cinclodes fuscus 20 Pseudoleistes virescens 50
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JP Myers 1974 Camp list 70 Km SE of Rafaela, Pcia de Santa Fe, Argentina 9 June Camp by road on very level (almost absolutely flat) plains, west of that center cultivation one row of very common planted legume (tree) along the road; a variety of field types in the adjacent fenced areas. For the distance (400 m) there may be a swamp but it is too far to tell from this vantage point. Temp at dawn = 7°, 2% clouds, light wind. Elanus leucurus 8 Zenaida auriculata Milvago chimango 10 Columba livia Aphelocoma plancus 1 Spizyto cunicularia 5 Vareilla chilensis 50 Neoxolmis 1 Droscopus ruficollis 30-40 Anthus sp many Thripophorus nunicius 3 Anumbrius annuarii 2 Tringa melanoleuca 2 100 Km SE of Sanhaygdel Etero by Rte 34, Pcia de Santiago del Etero, Argentina 10 June thorn scrub of subtropical variety, somewhat logged + definitely grazed by sheep, cattle, goats, appears similar to habitat evocated in the Filadelfia area of the Paraguayan Chaco, but not as dense + lower. Heavy concentration of cacti, including Opuntia 1 or 2 barrel types, + numerous small insidious (Cactus) pericinous too) ground cover type with long + tough species. The dominant tree is a legume + in fact there are several species of legume present. Tree height > 4 meters. Many shrubs. This list includes birds seen the evening before. Temp dawn > 8°, 0% clouds. tiranous, probably E. formosa 1 Myiopsitta monachus 50 Anthus laevis 10 Miniopterus trivirius 5 Cacatua lutea 1 Carniolaeuca pyrophaea 3 Boliophila dumiida may Chrysotilis melanoleucus 4 Lepidopterous platyura 1 Seltzor aurantiinensis Trichoglossus caerulum 5 Pseudocercis lepotoa 3 Rhinoerypta lanceolata 2 Coryphopteris acutulata Drymonius bridgessi 5 Stigmatura buteata many Amophila striiceps Formanis citatus 2 at least 2 other tyrants Bonotrichia capensis Opacella cithoides 20 Tragodyneidae many Poospiza forficata
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JPMycs 1974 Camp leit 100 Km SE of Santiago del Estero by road, Pcia de Santiago del Estero, Argentina Saltraticula multicolor 10 June cont'd 90 Km N of Tucuman by road, Pcia de Tucuman, Argentina Prosopis (?) scrub forest with several large clearings. Little undergrowth except for a man-dead grass. Some standing water. Few of the Prosopis are over 6" in diameter, now grow to over 4 meters high. Trunks are spaced regularly - 10'-15' apart. Their crowns form a continuous thick cover. Coragyps atratus, 10 Polyborus plancus 30 Buteo sp. 1 Vandellus chilensis 4 Columba picui 100+ Zonaidia auriculata 100+ Leptotila sp. 20 Otus sp. 2+ (sour) Nyctalus maculatus 1 Chrysoptilus melanolaimus 2 Drymornis bridgii 2 Furnarius rufus Paroaria coronata 2 Sicalis citrina or lutola 2 Lepidopispingus pusillus 10 Coryphistria alaudina 6 Upcorthi serthoides Syndactylus albocens 4 (?) Grallaria leuca pyrrhophia Xolmis irupero 1 Pitangus sulphuratus 50 Seropphaga subcrista 2 Seropphaga nigricans 1 Troglodytus aedon Mimus triurus 3 Poliopila doucicola 10 Saltator coerulescens 2 Bonotrichia capensis 5 11 June 20 Km SE of Las Viñas via Rte 9, Pcia de Salta, Argentina thorn scrub forest - low with at least 4 species of scrub legumes, one fairly substantial one. in some places there is substantial grass cover beneath the shrubs, and there are several patches measuring several hundred yds² which were bare beneath. Epiphytes common. One blooming - obviously hummingbird pollinated. Also several other hummingbird Type flowers in bloom. they were typically along a network of dry Arroyos which work through the thorn scrub.
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SPMyers 1924 Campileit 20 Km SE of Las Viñas by Rte 9, Provincia de Salta, Argentina 13 June contd Conopias [illegible] atatus 5 Myioborus brunneiceps Polyborus plancus 1 Piranga flava 3 Faleo sparnetius 2 Cyanocompsa cyanea Ottalis canicollis (sound) Sicalis Columba picui many Lepthospingus pusillus Parrots Conopiaspings p cucullatus Sappho sparganura * 10 & Prospiza torquata Claysephilus melanolaimus 1 Saltatricula multicolor Trichopicus cactorum 5 Zonotrichia Porruarius rubus Thamnophilus gilvigater 2 tyrants, perhaps Eutetriccus striaticepa 8* Troglohyta acdon Poliophila domicola Archiplanus solitarius 40 Km S of Jujuy by road, Provincia de Jujuy, Argentina 15 June Polyborus plancus 2 spp parrot Cyanocorax Thamnophilus Troglohyta acdon a furnald atuneger Prospiza Zonotrichia Conopiaspings
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SP Mlyers 1974 Camp List 50 Km S of Salta by road, Ricia de Salta, Argentina 6 August thorn scrub + agricultural field; meal on a dry arroyo 3500' temp at dawn ~2°C Falco sp. Ara tringa mitata Cyanoliseus patagonus Colombia picui Furnarius rufus Thamnophilus glirgator Seropophaga mundu Stigmatura bodytoides Pitangus sulfuratus Polioptila duidica Trogodytis axel Mimus travis Cyanocompsa cyan Saltator aurantiirostris Poryphospingus Zanotrichia Aimophila strigiceps Saltatricula multicolor Poospiza melanotoca 7 August 120 Km S of Salta by road, Ricia de Salta, Argentina riparian scrub (mostly acacias) and a small tree with California like leaves in the Rio Concha river valley. Hills covered with wild-pineapple like plant and cactus. Very dry. Mountains on both sides rise sharply several thousand feet. Vultur gryphus Cinclodes Falco sparvius Leptasthenura ahyfuliginiceps [illegible] Cranidoea pyrrhophia [illegible] Hirundinea leucocasa
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J P Myers 1974 Camp list 120 Km S of Salta by road, Pucia de Salta, Argentina 7 August continued Anacanthus flavostriis Stigmatura bodyfoides Mimus Triviris Thraupis bonariensis Euphonia chlorotica Piranga flava 20 Km S of Calayak by road 8 August Desert scrub - sparse trees and shrub in a broad river valley at 5000'. No undergrowth over a sandy soil littered with guinea pig holes & animal tracks. Many of the trees are deciduous, more over 30' A deep canyon runs near camp with good-sized trees within, indicating that there is seldom water flowing. Many good large shrubs up to 8' in diameter. Slightly birds was difficult in the Huilier areas. Temp = -3°C at dawn, no clouds, no wind. Polyborus plancus Buteo sp Mitraga chumingo Columba picui Leptotila veracruzii unidentified large dove Amorophittaca aymara other parrot (heard) Chrysopila melanolaemis Trichopithcus cactorum Upoclinia sp. Cranioleuca pyrrhophthir Leptathema platyuris Sicalis Spinus Zonotrichia Saltator aurantiirostris Stigmatura bodyfoides Mimus thius triviris Mimus saturninus Dixea diva Saltator aurantiirostris Zonotrichia capensis Sicalis
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JPMY85 1974 Camp List 20 km W of Acheral by road, 1500', Proia de Tucuman, Argentina 9 August camped in the lower end of a turbulently Tumultuous river valley leading into the Andes west of the city of Tucuman. Tropical seasonal rain forest, most of it recently logged but with a good stand on the opposite (inaccessible) side of the river. Many epiphytes, some blooming, as well as shrub layers and all the other groupings of a jungle. Second growth only just staked, and was a 10' high wall of vegetation, impasse imperceptible except for a path. River is swift and very rocky. We saw Tomout ducks live from 10 km upstream. Cathartidae Coragyps atratus Turdus ruficollis Turdus amaurochalinus Polyborus plancus Panda pitiamuna Buteo magnirostris Myioborus bermineps Falco peregrinus Cypselia chlorotica Leptothrix vernauxi Thraupis sayaca Amazona arctia Thlypopsis sordida Androngo nutata Chlorospingus ophthalmicus Sappho spangaea Sicalis sp. unidentified hummingbird Arremon flavirostris Cynoleucops torquata Constricticla capensis Cinclodes fuscus Syndactyla rufoperculata Sayornis nigricans Ptangua sulfureus Mecocerculus leucophrys Serpophaga munda Phyllloscartes ventralis Notiochelidon cyanoleuca Cynocerax chrysoptera Troglobyta aula
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JPMayers 1974 Camplist 17 11 August 10 km NW of Malbran by road, Provincia de Santiago del Estero, Argentina Thick second growth chaco scrub, with low trees and many dense juniper-like bushes. Dry powder soil, cemented together by rain + sun to a hard tablet. Foxes. Daily water but not within walking distance Tinamou Phalacrocorax olivaceus Rhyacryptes lanceola Coccorola swan Stigmatum budytoris Leptofila versauxi Eucarthisma meloryphus Columba maculosa Phytoma rubia Myiopsitta monachus Proglodytes aedon Dendrocoris mixtus Minius triurus Athene braei Poliapila dunicola Fornax rufus Ainophila strigiceps Fornax cristatus Zonotrichia capensis Cinacleuca pyrrhophia Saltator coeruleus Leptasthenura platensis Saltatricula multicolor Poospiga torquata Coryphosphingus cucullatus 13 August 40 km NW of Victoria by road, Provincia de Entre Rios, Argentina Very open grasslands bordering a swamp formed by back water of Rio Parana. Grassy sheet, and near the water line, cinnabar where the water once covered but has now receded, there are occasional salt encrustations. Shore edge well trampled by cows. A few eucalyptus trees and several batalis of often 30+ trees, plus 5 solitary trees near the high water line, app. unknown. The water has considerable emergent vegetation, mostly grasses, for the first several hundred meters, there is then a large channel of clear water. Podiceps major Chauna torquata Anas versicolor Ardea cocoi Anser georgica Polyborus plancus Nycticorax nycticorax Anas platula M. Viago chlamygo Plegadis chihi Netta peposaca Folco sparvijus
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SP Myers (1974) Campielt 40 Km NW of Victoria by road, Pucia de Entre Rios, Argentina 13 August (cont'd) Fulica sp. Zonaidla cuminulata Tachycineta leucophaea Tacana jacana Myopitta monachus Mimus saturninus Vanellus chilensis Podocor vacunda Polioptila cunicularis Zonibyx modulos Ceryle torquata Melotellus bonariensis Charadrius collaris (8) Lepidocolaptes angustirostris Sicalis sp. Tringa flaveola Furnarius rufus Conostichia capensis Calidris bairdii (9) Cinodocus fuscus Passer domesticus Calidris melanotos (40) Leptasthenura platyceps Anumbrius annuubi Gallinago gallinago Lessonia rufa Himantopus himantopus Xolmis rupicola Larus ridibundus Pitangus sulphuratus Sterna trudani Hymenops perspicillata Rhynchops nigra Machetornis rixosus 60 Km S of Gualeguaychu' by road, Pucia de Entre Rios, Argentina 14 August Low grassland - clumps of huge (7' high) sawgrass in an area which appears to be flooded part of the year. between sawgrass stands are 20 stands of short (1') grass, and in some places a short (8'-10' high) deciduous tree consleaves. Some areas are flooded now. No extensive trees or other vegetation what suggesting deep water. Mithuna maculosa Plegadis falcinellus 20 united peeps Anumbrius annuubi Chauna torquata 4 Pairs Calidris bairdii Leptasthenura platyceps Amagonefa Tringa sp. (6) Cinodocus fuscus Anas georgica Gallinago gallinago (10) Lessonia rufa Utiliropo chilango Myopitta monachus Hymenops p. Folqueres planus Zonaidla auriculata Machetornis rixosus Vanellus chilensis Chrysophila Pitangus sulfuratus Zonibyx modulos (1) Furnarius rufus Xolmis coronatus
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J.P. Myers 1939 Camp list Estancia Medaland, 55 Km S. of Juancho by road, Pdte de Malvina, Rincón Bs.Ars, Argentina 7 September see journal this date 26 September see journal for route Phalacrocorax olivaceus Vonellus chilensis Leptotila verreauxi Hymenops perspicillata Notelura maculata Fluvicula dominica Zeraida cuniculata Tachygnatha leucophaea Rynchops rufescens Cheuradius falklandicus Colaptes campestris Trogodytes aedon Plegadis chihi Chwora torquata Tringa melanoleuca Cinclodes fuscus Gisto Nornis platensis Coscoroba Anas spilillatix Tringa flavipes Anumus anumbi Molothrus badius Anas georgica Calidris baudinii Phaeocryptu Molothrus rubicillibus Anas flavirostris Calidris fuscicollis Furnarius rufus Molothrus bonariensis Anas Calidris melanotus Athenea hudsoni Pseudolestes virescens Eleonora Gallinago gallinago Spontania paludivida Aegialitis thilius Notolobus Rostrota sibilis Limonasa haematica Platagus sulfurens Anthus correndera Milvago chimango Himantopus himantopus Machyramnis rufos Antilus foratus Polyborus plancus Larus maculipennis Satrapa icterophrys Donacospriza albifrons Circo cirroceus Columba picacuca Lessonia rufa Eunectinidius capensis Embernagra platensis First southern martin ~ 20 September Sicalis luteola 27 September first hummingbird of spring by camp today. put out feeder immediately 28 September First Pyrocephalus rubinus near camp First Pseudocolopteryx flavicinti Pseudolista viridissima, Phacellodomus striaticeps building nest material in pampagras 5 October first Myiophobos fasciatus - in pairs by camp; first Muscivora tyrannus - in Arroyo 6 October Myiopitha monacha flying around camp. First on Medaland river we've been here this year 14 October Phaeopogon tapera flying around camp
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JPM Myers 1973 Daily list Stancia Medeland, 35 km S of Juancho by road, Pcia de Buenos Aires, Argentina 23 November Rhea americana (8); Spotted Nothura (5); Neotropic cormorant (50); white-necked heron (2); common egret; snowy egret; Maguari stork (20); Rosate spoonbill (5); white faced ibis (100+), southern screamer (50+); coscoroba swan long winged karter yellow billed pintail; Anas ruscicolor; white tailed kite (10); snail kite; Milvago chimango; Polyborus plancus; white-winged coot; southern lapwing (100); golden plover (1000+); ruddy turnstone (1); Calidris fuscicollis (300+); Calidris melanotos (28); buff breasted sparrow (500+); G Ylega; L Ylega; Hudsonian godwit (100); Himantopus himantopus; brown headed gull; trudeau's turn; rock dove; white-tipped dove; Pizacuro pigeon, guina cuckoo, Aso flammeus, Spotyto, Field flicker, Furnaris rufus, Kiskadee flycatcher, forktailed flycatcher, cattle tyrant, speckled tyrant, barn swallow (2); cliff swallow (2); white rumped swallow, blue and white swallow, southern martin, brown chested martin; Anthus corvina; shiny cowbird, pertaining cowbird, Agelaius philipensis, Bembicoides virgata, Streptopelia defilippi, Sicalia luteola, Sicalia flava, Pampa finch, Zenotrichia capensis 24 November Rhea americana (1); Spotted Nothura (2); Neotropic cormorant (100+); White necked heron (10) common egret; snowy egret, Maguari stork; white faced ibis (200+); southern screamer (100-4 chicks); long winged karter speckled teal; southern widgen; silvery teal, cinnamon teal; coscoroba swan, b-necked swan, Milvago, Polyborus; white-winged coot; southern lapwing, golden plover; Semipalmus plover (2); WR sparrow, Pied rail sparrow, buffy; G Ylega, L Ylega, Stilt sparrow (13); H godwit (50); 6 headed gull; trudeau's turn; rock dove, Pizacuro pigeon; quinua dove; Aso flammeus ; Spotyto; Field flicker, Furnaris rufus; Kiskadee, cattle tyrant; Forktailed flycatcher, warwailin flycatcher, speckled tyrant; we swallow, blue two swallow, southern martin; Anthus corvina; Molotheus bermiencio; Agelaius thilas; Bembicoides virgata; Sicalia sp. Pampa finch, Zenotrichia. 25 November Rhea, spotted nothura, Neotropic cormorant, white necked heron, common egret, snowy egret Maguari stork, WE chic, DOVAMER, Yb pintail, speckled teal, southern widgen, silvery teal, cinnamon teal, coscoroba swan, b-necked swan, long winged karter, Milvago, Polyborus coot, lapwing, golden, WR, pied rail, buffy, Bembicoides (?) GYlega, L Ylega, Stilt sparrow, B. thilif, H godwit, 6 headed gull, trudeau's turn, rock dove, Pizacuro pigeon, Spotyto, Field flicker, Furnaris rufus, Spartaornis malucoide, Anthus sp., Phleocryptes melanopis, Kiskadee cattle tyrant, speckled tyrant, forktailed flycatcher, non-millan flycatcher, 6R swallow
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JP Myers 1973 Daily list 25 November Estancia Medland, 35 Km S of Trenchley road, Pcia de Buenos Aires, Argentina Blue-and-white swallow, southern martin, Anthus coroebus, Molothrus sp., Agelaius thilius, Pseudoleistes virescens, Sicalis sp., Pampa finch, irridant finch, Zonotrichia compeni 27 November Rhea, spotted nothura, Neotropic cornavrant, tinamou, common egret, Maguari, WFibis screecher, YB pintail, southern widgeon, Milvago, lapwing, gull, WR, pectoral, buffy, G+L Ylapp, Hgodwit, BN stilt, fift spaper, Sap dove, Speckyto, Furnarius rufus, Kiskadee, fork-tailed flycatcher, speckled tyrant, vermilion flycatcher, wr swallow, Anthus coroebus, Molothrus, Agelaius thilius, Pseudoleistes virescens, Sicalis sp., Zonotrichia capensis 29 November Rhea, spotted nothura, Neotropic cornavrant, WN heron, common egret, snowy egret, WFibis, Buff-necked ibis, YB pintail, speckled teal, southern widgeon, Milvago, Chlamydochaus Polyborus, Swainson's hawk, long-winged harrier, coot, Vanellus, golden plover, WR, pectoral, buffy, G+L Ylapp, Hgodwit, BN stilt, Microcephala, Przeuro piggin, Speckyto, Ario, tyto alba, Furnaris, lcivori, Kiskadee, vermilion flycatcher, speck. tyrant, wr swallow, b+w swallow, Swainson, Anthus, Molothrus bonariensis, Agelaius thilius, Pseudoleistes virescens, Sicalis, Pampa finch Zonotrichia, December Rhea, spotted nothura, Neotropic cornavrant, WN Heron, Nycticorax, common egret, snowy egret, WFibis, Maguari stork, Roseate spoonbill, southern screamer, BN Swan, Cacatua swan, Southern widgeon, YB pintail, Milvago, Polyborus plancus, Long-winged harrier, cinereous harrier, Vanellus, Pluvialis dominica, WR, Pect., Buffy, G+L Ylapp, Hgodwit, BN stilt, bh gull, trudaustern, Asio, Speckyto, Field flicker, Furnarius rufus, Rktade, spectacled tyrant, b+w swallow, wr swallow, Swainson, Anthus, Molothrus, Agelaius, Pseudoleistes v., Sicalis, Zonotrichia, Passer
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JPMyers 1973 /1974) 01 Banding schedule 10 km N W of Rio Grank by road, D Terr. de Tierra del Fuego, Argentina 1 November 1023-02801 (#3) Pluvialis socialis juvenile 59g. Grid 1 (Farmhouse Puddle), Estancia Wedeland, 35 Km S of Juancho by road, Pucia de Bs Aires, Argentina 30 December la 821-52001 + Right Yellow White rump 39g la 821-52002 Left orange white rump 39g la 821-52003 right green white rump 43g la 821-52004 right pink white rump 33g la 821-52005 right red white rump 36g la 821-52006 left yellow white rump 43g 2 812-02801 right yellow Micropalama 59g 1 January 2 812-02802 right yellow Pedoral 71g 2 812-02803 right orange Pedoral 2 812-02804 right red Pedoral 65 65g 2 812-02805 right green Pedoral 55g la 821-52007 right orange white rump 41g la 821-52008 left green white rump 35g la 821-52009 left red white rump 433g Grid 1 (Farmhouse Puddle), Estancia Wedeland, 35 Km S of Juancho by road, Pucia de B.A., Argentina 2 812 02807 right pink ped 62 75 2 812 02808 left yellow ped 51 64 64 2 812 02809 left orange ped 55 68 2 812 02810 left pink ped 56 69 2 812 02811 left red ped 54 65 2 812 02812 left green ped 58 71 2 812 02813 l yel r yel l ora ped 54 65 2 812 02814 r yel l yel l ora ped 58 65 2 812 02815 r yel l yel l red ped 56 76 2 812 02816 r yel l green ped 57 76 2 812 02817 r yel l green ped 57 70 note missing !! #2 band..
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J.P. Myers 1974 Banding schedule Grid 9 (Farmbore J.D.H) Estancia Midland, 35 Km S of Joachim by road, Provincia de Bs As, Argentina 1 January la 821 52010 left pink Wrimp 41g 54 cont. la 821 52011 l yel Wrimp 38g 57 la 821 52012 l pail WR 42g 55 la 821 52013 l or WR 42g 55 la 821 52014 l yel QR 41g 57 la 821 52015 — UR 41g 57 la 821 52016 4y WR 39 52 la 821 52017 l yel WR 38g 57 Dead (050) reused la 821 52018 l p-0 WR 41g 54 Dead (054) not re-used la 821 52019 l r-o WR 39g 52 Dead (054+) la 821 52020 l r WR 44g 57 la 821 52021 l g. WR 37g 58 la 821 52022 r pink WR 43g 56 la 821 52023 l p ink WR 39g 52 Grid 5, Arroyo Chico at Tower Llanos, Estancia Medland, Ptdo de Madariaga, Provincia de Bs As, Argentina 15 January la 821 52017 (r) I.y. WR 35 — la 821 52024 (r) I.p. WK 33 — la 821 52025 (l) I.r WR 32 # la 821 52026 (r) I.p WR — — la 821 52027 (r) I.y WR 35 — la 821 52028 l o WR 39 # la 821 52029 l p WR 33 $5 la 821 52030 l y Chao falklandica 45 57 Tower Llanos, Estancia Medland, Ptdo de Madariaga, Provincia B.A, Argentina 27 January la 82152031 l g.y red WK 36 $8 3 1023 02802 ry Plov. domin. 119 $54
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JPMyers 1974 Bandling Schedule 06 Linear Grid Sub B-7 Estancia Medeland, 55 Km S. of Juncaloby mad Ptdo de Madariaga, Provincia de Bs Aires, Argentina 20 April (cmtl) 520 ro WR 419 97 brg 002826 ro Zonbyx 62 98 ry Ch falk 70 Linear grid subunit I, Estancia Medeland, Ptdo de Madariaga, Provincia de Bs Aires, Argentina. 23 April 99 lgy WR 47 la 52 100 lgo WR 40 101 lgp WR 57 02827 rp Eon 63 102 lr Ch fale recapt. 9-14. weight=72gm 63 103 ry Ch fale 54 104 ly Chale falk 59 Linear Grid Subunit I, Estancia Medeland, Ptdo de Madariaga, Puccin de Bs Aires, Argentina 27 April 105 ro WR 49 106 lgg WR 59 107 ly4 WR 53 108 lyo WR 46 109 lyp WR 54 110 lyr WR 45 111 lyg WR 52 112 loy WR 51 below joint above joint ↓ 27 August, Linear grid subunit B-7 Estancia Medeland, Ptdo de Madariaga, Provincia de Bs Aires, Argentina 113 'bump' Ch. f La Orqueta (2,3) on Map of Medeland, Ptdo de Madariaga, Provincia de Bs Aires, Argentina 188x 5 Sept 114 Ry WR ? 30 115 Ko WR Recapt. 9-14-74 116 Ry Chalf La Orqueta 61 117 Rp WR 41
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JPMyers 1974 07 Banding Schedule see 8-23-74 Journal La Orqueta (2,3) en Medaland Map Ptdo de Madariaga Pcia de Bs. Aires, Argentina (Band number 38 Ry Color band) Zonibyx modulus weight 83 5 Sept (con't) 29 Ro Zonibyx 7? 75 30 Rp Zonibyx 8? 79 31 Rr Zonibyx 7? 75 118 Ro Ch Falklandicus 58 (19,13) Arroyo Chico, Estancia Medaland, 35 Km S of Juancho by road Ptdo de Madariaga, Pcia Bs Aires 6 September 3A 70602 Himandopus 02832 Rg Zonibyx - 52119 Rp Ch f - 120 Rr WR 36 ?21 Rr Aut 62 02833 Ly Zon 86 34 Lo Zon 91 La Orqueta (2,3) en Medaland Map, Ptdo de Madariaga, Pcia de Bs Aires Argentina 10 Sept 122 Rg WR 50 22 8 35 Ry Pect, 61 123 Rg Falk 62 14 Sept 124 Ly LWR 40 125 Lo WR 35.5 126 Lp WR 40 127 Lr WR 42 128 RyLy WR 38 129 RyLo WR 44 130 Ry Bairds 38 131 RyLp WR 46 132 RyLr WR 42 ↓ alum above Color below
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J.P.Myers 1974 Banding Schedule 08 La Orqueta (23) on Medaland Map Ptdo de Madariaga, Pcia de Bs Aires, Argentina USFWS # 52133 color Rybg WR 416 gm 14 September la cont'd 39 Roly WR 38 35 Ly Chf 73 36 Lo Chf 74 37 Rolo WR 43 Tower Llanos (14,13) on Medaland Map, Ptdo de Madariaga, Pcia de Bs Aires, Argentina 20 September 38 Ro Buff - 39 Rp Buff - 29 Septem Arroyo Chico Curré (10,13) on Medaland Map, Ptdo de Madariaga, Pcia de Bs Aires, Arg. 29 September 40 - Cinclodes fusco 39 41 RoLP WR 44 42 Ro Bands 33 43 RoLr WR 38 44 RoLg WR 37 45 RpLy WR 36 46 RpLo WR 37 47 RpLp WR 40 48 RpLr WR 41 (13,24) Arroyo Chico 1 October 2 02836 tied golden 139 028347 Rp golden 128 (11,10) Tower Llanos Stanicio Medaland 14 October 49 Rr buffy 78g 02836 - golden 134g (22,17) Stanicio Medaland 17 October 50 RpLg WR 39.5 51 RrLy WR 41515
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JPMayers 1974 09 Bandir Schedule (22,17) Etania Medaland, 35 Km S. of Jujuy by road, Pto di Malananga, Pteia de Bs. Aires, Argentina 17 October (cont'd) 62838 Golden 135 39 Golden 139 410 Golden 135 41 Golden 142 42 Golden 160 43 Golden 151 20 October (22,15) Etania Medaland 52 Rrbo WR 38 * 44 — Golden 146.5 45 — Pectoral 55.5 [illegible] 46 — Golden 151 Subunit 4 Etania Medaland 14 November 53 Roly Ch.falk chick 15 * spotlighted
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Places + Número from Arturo Tarak A will be in Agua Blanca - jungle on ToJuy - Bolivian border Pi Beringo Anthropological places of interest Jujuy { Pormamarca on Rte 9 - church of 160% Uquia Humahuaca - very touristy - Inca: pucara Tilcara - an old Inca fortress * * also botanical garden Francisco - see Contino - Recurso Naturales } Salta - a mix city train from Salta to SanAntonio de los Cobres Tatil del Valle: near Santa Maria - see Museo Antropológico on main square Tolombon - unfinished fortress Cafayate - best wine EC National Park Finca Rey near Metan --> not well visited Near Tucuman - paved road to San Xagier through rain forest Estancia : Finca Calilegua - near Tabacal 'Richard (z) left administrator' from Peter Tarak Gustavo Rauch Coll Cordoba 665, Salta % Ana Maria Giacosa TE 12.249
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locations discussed with MAER Rumboll 9-21-73 Pucia July Lago Pozuelos - Boswell saw many phalaropes 10^3's na migrants Lake ~1 Km N of Abra Pampa - ideal mud flats, semi saline, manius has seen it. Lago - de Guayatayoc 150 NW of SS de JuJuy by road Big saline in JuJuy if I have trouble to Mina El Aguirre S of Abra Pampa - road is one way only (ask at 700 Cruceros/road is open going up or open going down Trouble in JuJuy -> Mr + Mrs Richard Leach (wife Carolin) at Los Lapachos (in living londowner three) on way to JuJuy just across border. Salta - see Nat Hist Museum - Museo Cien. Nat sechim Sr Gunnar Hoy in Parque San Martin don't mention him to Olrog or vice versa. for trouble Ceibalito Mr Carbett on Rt 16 or river Tucuman Olrog's house - La Madrid 1248 Laguitubo Lillo is marked ***** part of the area SE of Tucuman may be mud as a result of irrigation Santiago Bañado 'c Figueroa -> big water holding area @ENE from Sant. del Estero in middle of desert. Rainy season Nov Dec Jan Formosa - au Olrog
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more location Santa Fe NW corner from Rte 95 S of Cabo Colorado, a village on border on 95 xxpuma CHACO ---GC SANTA FE unmarked & occasionally flooded road leading to good site contact Sr Chino Medina just S of Cabo Colorado the whole area up there is sometimes under water. Rte 98 going from Reconquista to Tostado goes through good areas. * inches of water covering it all If going North use Route 3 which is West of main road - Vera head north at Patria Intriago there is a road to take into the marshes look for maned wolves Trouble in Reconquista - see Sandy look has a Chevy agency in Corricates. Luis & El Sombrero paved road leading S from Mercedes (#148) goes through series of small puddles. ~60 Km S of v.M. Roland Dashwood and Mr .... FFrench live on their place on the go main road. This area is full of phalaropes if nothing else. To get to Mercedes go through Lujan from B.A. Cordoba Laguna Mar Chiquita - big Flamingo type habitat Arias - Laguna hastunas - need permission from Philpott & or Schielit (?) or Sir Allen Murray This is just beyond Venado Fuerte over border.
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Cootao - capetay Patron - Arvelaiz Mar del Plata < (Rawson y Albert) Medaland
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Arturo Tavac geologut Ing. Clara Movia laboratorio de fotointerpretacion Facultad DE AGRONOMIA U.N.A Av. San Martin 4453 Don Yofre Perez Macchi la Adele" Rayordomo Perin. Valdy Adolfo Costa Bonorino. Bonorino Oth generation Ivy met through Sandy Taylor. Is giving no letters of intro to Midland (this family used to court)
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more locations BA provina Laguna Chasicó just N of Rte 22, W of BB at the brodery BA and L Pampa Pucias. Chubut Peninsula Valdez on beach at Pto. Madrin along shores of lffe. San Jose Isla de las Pájaros - gulls, corm., ducks. Caleta Valdez for terno Pta Norte-> elephant seals, sea lions, shenthills Checkout by Salinas -> road goes right by ~180' below sea level Area around due inland from Comodoro Rivadavia to Huve Huapi y Laguna Hao Musters, whole area is fragated Punta tombo Atlántica tomberg -> get permission from Oficina Turismo (Sr Torrejon ??) in Rawson or trelew turn in at Estancia La Peña For any of this sort of permit or help see Carlos Garcia in Puerto Madrin 9 de Julio 345 tele 251 a tourist agent but excellent help Santa Cruz - coast at Puerto Deseado is worth looking at. Whump on Thu Puerto Santa Cruz ? mud flats Bahia San Julian (Rio Gallegos -> English Club there, place to talk -> John Scott.
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