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