Argentina field notes, v1505
Page 187
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
JPMyers 1973 Journal 2 Km N of Farmhouse, Estancia Meatland, Pcia. de Buenos Aires, Argentina 29 November We spent the morning at camp in working on skins and stakes. About 10.30 I happened to look up and see a large flock of (100+) of Swainson's hawks soaring. These were the first of this species that I had seen in Argentina. They continued to pass overhead in large flocks as the morning progressed, with two landing independently (at different times + in different places) in the stubby short grass. No hunting observed. The wind was moderate, continuous, and out of the W. Light cloud cover. Farmhouse pond, Estancia Meatland, 35 km S of Juaicho by road, Pcia. de B.A. Arg. 2 December Began taking grid data 0830. The morning had begun cool (45°), clear, and with a slight breeze at 0530. By 0830 temp had risen to 68°, and continued up until I stopped at 1230 at 79° which grew stronger out of SW and became moderate and steady by noon. Cloud cover never rose above 20%, all of which was [illegible] on the horizon. The grid was dominated by a flock of Brown-headed gulls (both medium & miniature) - [illegible] in each grid count. There were very few Calidris, pectoralis (1 on each of 6 grid counts) + 2 WR. This was fewer than I had seen on any previous cursory count. Other shorebirds recorded in counts: Limpkin, golden plover, BN stillt. Also, White-faced ibis, Neotropic Cormorant, Common egret, Kiskadee flycatcher, Furnarius rufus, Anthus correndera, Sicalis, Paser domesticus. In addition to species recorded in the counts, where passed on or over the grid between counts: Southern lapwing, Southern screamer, Milvago chimango, WR swallow. Also, species recorded on the grids appeared and disappeared between counts. This was particularly true for Vlegs which seemed to anticipate my counts, leaving a few minutes prior 10 counts were run 0835; 0900; 0930; 1000; 1030; 1100; 1130; 1200. The birds appeared to adapt readily to the presence of the car and blinds; the blind is on top of the luggage rack; [illegible] with a roof acting as a climbing point up to the observation point. The only species which was obviously spooked (upon [illegible] (in that they left) were 2 screamers. The gulls did not even set up a greeting chorus, merely, as they certainly would have done if I had approached on foot. Judging from the behavior of the birds on the grid, we were not obtrusive.