Argentina field notes, v1505
Page 359
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
JPM Myers 1974 Journal 64 Tower Llamos, Estancia Medeland, 35 km S. of Juanjio by road, Pto de Madariaga, Pcia de Bs Aires, Argentina 31 March (contd) surveyed a flock of WR ~75 in 10 across the main body of open water, looking for banded birds. I found two - R.Lg and Pg Lg in the 64 WR present at 16:50. Soon afterwards birds started to appear at the S. end of the swamp: a WT (this foraged in front of the blend for 20 minutes, probably of an open well in the mud in and at the edge of the tile stand. 2 spp of coot, including young of both + adult alone, Phleocryptes, Many-colored Marsh-Tyrant, a 8 Rosy-tailed Pochard, + Aythya clypeata. (See Nyct sp. accent) Unfortunately the Nyct's were not very cooperative for photographing, emerging completely from the tube with falling light. I did obtain some fotos of 1 + the WT (as). At 17:40 total count in Nue Swamp, visible in a 75 x 40 m shallow drying lagoon: 11 Hgawit, 20 Micropalama, 19 Lesser Yellowlegs, (1 GY Lg), 4 screamer, at 1~50 White-rumps, many brown hooded gulls, a few YB Ristard, 1 Maguari stork, 6 Coscoroba, a flock of Rosy-tail Pochard, several Nyctorynchus. By 17:45 a Stork had come in, more WR, an Asia flew nearby. At 17:50 - 74 WR + plus some I can't see. Gulls continued to fly in, as did a few screamer. 19:53 from WR. 19:55 - 14 WR, including Rg Lg flew in. 20:00 the sun set as 3 more WR flew in. 2 more Stork. The wind died by sunset, never having been strong this afternoon. Cloud cover = <10%. Temp ~15°C. En route back to the camp I spotted a wild felice - proportioned like a mountain lion w/ long tail etc., but considerably smaller. The hips + shoulders blades appeared to bear a horizontal striping to them. Otherwise looked a fairly brown. 1 April Arroyo Chico, Estancia Medeland, Pto de Madariaga, Pcia de Bs Aires, Argentina occasionally down & shrouded by a very heavy fog (not too high, though, as I could see a hint of blue) and 10°C. at 07:45. This fog is the heaviest which has occurred since our arrival at Medeland. Very slight hint of a SW wind. Because of poor light (i.e. fog) I sampled the 1st Chilean grid units from the beach rather than above it. Although the car's presence does not shift WR position, it does push ducks, GY Lg, etc., in front of us. Before reaching the grid however, I found Jogg which are new this year to Arroyo Chico: Zonibyx modestus (3, all in winter plumage) and Micropalama laimanii (2). Grid total: White-rump 10,15(25); Charadrius falklandicus 8,6(14); Hudsonian godwit 2,4(6); Black-necked Stilt 2,1(3); Neotropic Cormorant 0,3(3); Maguari Stork 0,4(4); Buff-necked Ibis 0,1(1); Wilson's Spotted Rail 2,0(2); Brown-headed Gull 14(5); Rufous-breached Nigripes 11(8).