JPM Myers 1974 Journal (10,13) Arroyo Chico, Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Madarina, Pcia de Bs. Aires, Argentina 6 September (cont'd) began feeding. I tried to chase the small birds into the reeds but found that they were fluttering away beneath the reeds (no evasive action apparent), which were ~2-3' off the water at the most. Banded: 3 Zonibyx modestus, 2 Charadrius falklandicus, 1 Calidris fuscicollis, 1 Himantopus b. see banding schedule. 2 Pluvialis almost flew into reeds. Before taking the reeds down I walked ~500 m downstream on the other side of the Arroyo, in order to see how much unplowed area remained: there is a patch easily 200m across in the (8-9,13) area. Much of it looks like potential Tryngites habitat. Only shrubbirds there today were Vanellus, Goxilla, Spreybo Sicalis also present. Chauna in the nearby Arroyo. Also: Several spots which may suit melanotus there also, gray and Solanum filled dips which with water would be nice pectoral puddles. (15,27) Arroyo Chico, Estancia Medaland, Ptdo de Madarina, Pcia de Bs. Aires, Argentina After banding drive upstream to new grid site (Grid 11) placed along the Arroyo the afternoon of 2 September. Saw 1 Lybius (banded this morning) in (13,21), ~2 Km upstream from banding site and 1 L. olf. En rock. Also noticed bairdie flying between Arroyo and uplands, feeding in both places. After dawn the sky clouded over briefly until almost 70% cover, but by 1000 declined to 45%. At Grid 11 I took dispersim data from 0930-1030, and during part of the first half hour recorded flock of Zonibyx paviing overhead. See flock accent, grid data book, WE board app. accents. Behind me during two pairs of observation, i.e. in the (fields to the W in 15,27) were 2 Pluvialis dom, 5 Oryzobius, several Vanellus. Grid totals: [Sp, average (range)] 10 Calidris fuscicollis 2 °(0-5) 59; Calidris bairdie 0°(0-2).26.9; Charadrius falklandicus 0.1 (0-1)3. 30 grid reading at 2 min intervals (most of them). (10,13) Estancia Medaland, 35 Km S. of Juancho by road, Ptdo de Madarina, Pcia de Bs. Aires, Argentina 1630 - drove out again to the (10,13) area of Arroyo Chico. A very strong NE wind has picked up and is changing water distribution along the Arroyo. 0° cloud. At (9,13) several of the islands in the arroyo here (islands 1-2m dry, 5/m acre) are flooded. Because of the Arroyo configuration here, a NE wind piles up water in this stretch, so it comes in both down and upstream (the Arroyo in several hundred meters makes a turn more acute than 90°). Many of the shorebirds here yesterday (incl. R. pink & Fred (1967)) and this morning are gone. Remaining are several Lh. falklandicus, 2 bairdie's, Vanellus, and