SPD Myers 1974 Journal (24,16), Estancia Medaland, 35 Km S of Trenelbo by road, Pto de Madariaga, Proia de Bs. Aires, Argentina and began searching for flocks from a slightly raised portion of the surrounding field. I found that a down position helped tremendously in picking out low flying flocks, as it put them above the visual horizon, whereas their height cut in fixing a precise landing location. Because you have to see the birds before you can see their landing spot, I stayed down. Between 1755 and 1805 we saw myriads of goblins flying west, presumably from western foraging areas. As last night, 200+ settled in the wet area beneath the second windmill. We were able to pick up one very large flock (100 individuals minimum) more than 5 minutes flight time to the west in the direction of the (6,18) region (but who knows?). Calidris melanoto settled down in the wet area slightly to the north, but may have moved (ADVANCED) down to the main roost later. After it became apparent that the wind was going to continue past landing hours, we left (1840), driving Salay Huérfano. (19.9) Estancia Medaland, Pto de Madariaga, Proia de Bs. Aires, Argentina At the pond beside the Polyporus planus nest (see journal 10 September) we found a large flock of roosting Puvialis dominica, Calidris (melanoto + baardi i + WR?), and Tryngite (at least one). Habitat identical to roosting site by (24,16). Left at 1945, almost dark. Rain. Wind continuous. Sun set at 1830. Estancia Medaland, 35 Km S of Trenelbo by road, Pto de Madariaga, Proia de Bs. Aires, Argentina 19 September 0630 temp=9°, cloud cover 80%, a very slight, barely detectable E wind. Entered the Arroyo early in the morning, passing through the (4,10) gate on Tower Claus. I followed Arroyo Chico, occasionally skirting into the surrounding uplands, as far as Rte 11 Bridge (23,30), when I crossed it. I then returned along the eastern side, visiting the large lake + swamp system N of the 3rd Windmill in the (25,30) region, and traveling most of the remainder of the Arroyo uplands. From 0800 to 0910 I watched a flock of C. fuscicollis as they foraged in (15,76) just S of grid 11 (which had no birds out during my stay in the vicinity). As can be seen from the sighting records, C. baardi i is now infrequent in the Arroyo, much reduced over previous outing. However, it still appears to be plentiful in the uplands. C. fuscicollis appears to have increased markedly, and the flocks are now using the linear