SPFlyers 1974 Journal( 45 13 March (contl) Arryo Chico, Estancia Medeland, 35 km S. of Juancho by road, Ptdo de Madaniaga, Provincia Buenos Aires, Argentina 1200 returned to linear grid subunit 1 for sample. Grid totals: White rump 11,70(27); Charadrius fulvicaudus 5,9(14); Southern Lapwing 0,5(5); Neotropical Cormorant 0,1(1); Speckled teal 0,5(5), Brown-hooded gull 3,2(3); Coruculera pipit 0,1(1) - As can be readily seen, shorebird numbers declined from this morning, the route from the birds congregating a preening, bathing, and roosting centres, which are traditional (at least over the time scale of this study to date). Today by 1300 a flock had congregated between 6 and 5, roosting behind ocpipin (i.e. downward slopes). Present: six White rumps, Charadrius fulvicaudus, and B.W. Shirts. The tightness of these groups appears to vary. I have the impression that in lake afternoon White rumps aggregate much closer. Between 6 and 7, and again between 7 and 8, then were other scattered groups of resting shorebirds. The 6-7 included a Sanderling (certainly the one spotted earlier). Among that group was also Roly, a bird not seen again only 2/3/5/74. Rie 11 Pond, Estancia Medeland, Ptdo de Madaniaga, Provincia Buenos Aires, Argentina 1600 went to Rie 11 pond, collecting one out of the 5 Pectorals seen. Water level in the pond appeared to be up slightly. The Pectorals observed were all foraging solitarily. Arryo Chico, Estancia Medeland, Ptdo de Madaniaga, Provincia Buenos Aires, Argentina Then came to Arryo Chico - birds all very spooky - extremely so. Between the curve behind the towerward subunit 4 we found several groups (WR, mostly little) between 3-4. Elachura flava seen very for those that we did see were predominantly resting. Spent some time watching WR feed, trying to determine what it was they were eating. See WR spp. accent. Towerr Llanos, Estancia Medeland, Ptdo de Madaniaga, Provincia Buenos Aires, Argentina Spotted 9 buffle flying from Arryo Chico onto Llanos, but could not find them again; when we followed. However, we did find 7 Thinocorus in an opening in the thistle where they have been in the past. Collected 1 (172). 14 March Arryo Chico Estancia Medeland Ptdo de Madaniaga Provincia Buenos Aires, Argentina At subunit #1 of the linear grid at 0815. Spectacular sunrise, with high thunderheads forboding to the great, struck pink (by the dawn). Temperature at 0600 = 15°. Wind at 0800 = 0, clouds 20%. No fog. Grid totals: White rump 9,2(31); Charadrius fulvicaudus 8,6(14); Black-necked Stilt 0,2(2); Southern Lapwing 1,10(1) ;