Argentina field notes, v1505
Page 549
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
JPMYAS 1974 Journal Linay Grid, Arroyo Chico, Estancia Medaland, 35 km S of Juancho by road, Pto. de Madalanga, Provincia de Bs. Aires of Worembur and continued today, a low heavy cloud cover with occasional drizzle. Accumulated 5mm during the morning. Grid totals: C. fuscicollis 12; C. bairdi 3; Limosa haemoptica 2; Tringa flavipes 1; Vanellus chilensis 1; Pluvialis dominica 5; Chenidius falklandicus 1; Himantopus h.1, Ardeola ralloides 2; Anser gryphus 6. The strong S wind, which has picked up since yesterday created arroyo conditions very similar to those created 4 November by a similar but even stronger wind. Thus three were flocks of WR at 14.13 in the Arroyo, between subunits 7-8, and above Hullican grid (15.25) actually as there were 4 November. After running the grid I collected two non- territorial Tringa tots (172-173) from (13.23) and 2 territorial WR from (15.25). See repeat acoustics. (17.28) Arroyo Chico, Estancia Medaland, Pto. de Madalanga, Provincia de Buenos Aires, Argentina 17 November - left camp in pre-dawn hours with the intent of beginning calculation for another fuscicollis % territorial bird calculation. However as the light increased the weather turned ominous, dark clouds cumulonimbus piled to the SW, from where the wind came. Dawn itself was one of the red- dot I have ever seen here. Cooling morning temperatures ran 11-13°C. So upon reaching Tower Clancy I decided to take microhabitat data and to collect a territorial fuscicollis before being forced in by the rain. But the weather developed contrary to my expecta- tions. By 0830, after a period of 25 minutes during which it rained 5mm at the farm hours, the bulk of the storm had rolled over, leaving a dark mass still to the W NW, but one which contained NE only without dumping upon me. Accordingly, I pulled the canopy a previously chosen site and begin the % territorial WR calculation process. The unit of habitat chosen lies in a fairly typical stretch of Arroyo where I have seen numbers of fuscicollis foraging in both space-specific and n.s.a. fashion. There is 5 ft in ~10m wide at the narrowspot of hug, with a broad overpass on the N edge where a spit of water extends several meters in the upstream direction away from the main body, leaving a narrow cape of saturated mud running down the center of the grid in that portion. I took microdata there early a, the morning (face