J.P. Myers 1924 Tryngites subroficollis 30 (9.18), Estancia Medaland, 35 km S. of Juncha by road, Ptdo de Madaniaga, Pcia de Bs Aires, Argentina 4 September 1645 possible buffy foraging with Pluvialis d. and Ocephalus at the very SW corner of the Estancia. Could not find it again when I went in for a closer look 8 September at last! 0920 in the ble II field → a pair of Tryngites. And, third! Survey of the field revealed 8 total foraging with Ocephalus and Pluvialis (see [illegible] journal). The buffies are foraging quite close to one another (a group of 3) in classic buffy style - a jerky, steady walk. 0955 - one buffy approached another from 50 cm - ran over towards 'B', pecked its bill within 5cm of where the other's 'B's bill was. 'B' jumped away. 'A' continued approaching. 'B' [illegible] jumped further away, calmly and while doing so spread its wings out — crooked. They then went to a stream of 2m and fed. All three are scratching a lot (and as good scolopacids should). 'B' just pecked at A. 1003. One ran after another as the latter began picking up something. How active! + aggressive in comparison to Calidris. 1008 - foraging within 20cm of one another. 1009 more aggressive. 1010 they flew. (14.26) Estancia Medaland, 35 km S. of Juncha by road, Ptdo de Madaniaga, Pcia de Bs Aires, Argentina 1145 small — single buffy in flock of Ocephalus and Bairdii spooked by sheep along the Arroyo in the grasslands. Tried to collect but the infernal wind whisked my shot away. (9.18) [illegible] Estancia Medaland, 35 km S. of Juncha by road, Ptdo de Madaniaga, Pcia de Bs Aires, Argentina 10 September 1215 - flock of 20+ Tryngites behind the sheep and Ocephalus. 1235 - another flock of equal or greater size, but spooked by sheep which are running from car. See census in journal. 1330 - sheep et al. gone, things have calmed down. Buffies have separated from other species (they were in a mixed flock). Now there is a pure flock of Tryngites with 28 birds. Infrequently a few Tryngites fly off, one or two together. But the flock is foraging in a fairly tight formation. 1334 - I think that I can discern 2 size classes — i.e. 87+g. 1340 [illegible] — being chased by Danellus. Have landed near the car. 1415. Buffies which flew in near the car 0.5 hrs ago now, in last 20 min, have moved 7D on to the NE. They [illegible] by the car preceding. 1430. Heavy % of buffies are now preening. I have seen stretched using comfort movement twice. [illegible] — both Tryngites and Pluvialis are flying without being spooked — jumping about of foraging. [illegible]. Some