Argentina species accounts, v1504
Page 437
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
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