JPMayers 1974 Journal Grid 4, Tower Llanos, Estancia Meddend 35 Km S. of Juancho by road, Pto de Madariaga, Proia de Buenos Aires, Argentina 17 January cont’d were [illegible] still there when we arrived, many on gut flying down at the base of the tower, in the adjacent section of arroyo + the cattle drainage area and/or grid 7. Grass in 7+ surrounds was trampled, and the cows had performed the same with shit. I ran them off, and went to #4 to replace stake. Loi, returned by the car. She noted that as soon as the cows had left, or within a few minutes, a flock of WR, Buffs + Goldens appeared (50 all told) + settled in the “cowed” area. These birds were extraordinarily non-spooky, tolerating my close approach (15’) when I returned from the grid. Most of them, particularly the WR, were working over fish covies. My theory about why hydrobian godwits have long employed dalla thura doesn’t hold for other shorebirds. 2 Lapwings on grid 7 calling from the slot as well. After repairing the guy wires, we climbed onto the tower. [I should note that before the ascent we had fairly clear cases of twin-banded WR + Buffy in the immediate vicinity of the tower (within 20m) and resighting of a banded WR — see napkin app. accent.] First grid reading at 0820. During the morning, the weather remained cool, with the cloud cover eventually decreasing to 70% by 1100, and the wind (after becoming discouragingly strong from N) making an abrupt change to S at 1100 precisely. I was quite pleased with Grid reading. Loi: took following info (not on grid) on one Buffy for over an hour (see app. accent). Grid totals: 4a (2500 m², 5 x 5 units; composed of units (1,0)(1,1); (2,0); (2,1) of 4b) [sp, ann number(range) total] Buff-breasted Sandpiper, 2(0-5)33; Golden Plover 1.7(0-4)27; white-rumped swallow 2(0-12)31; Correndera pipit 0.2(0-1)3; Cow — (0-1)1. 4b (5625 m², 25 x 25m units): Buff-breasted Sandpiper 7.5(4-12)120; Golden Plover 3(0-6)48; white-rumped swallow 1.7 (0-12)31; Rufous-backed negrito 0.1(0-1)2; Pseudoleistes unicolor 0.5(0-5)8; Correndera pipit 0.3(0-1)4. Another cow pipit WR → Lesser Yellowlegs; one appeared in chainage, area at 0940 + began putting! 1035 golden called — then all the local birds flew down toward arroyo. By 1040 wind was very difficult. Loi was impressed by the succession of birds using the drainage ditch coveys — first the WR, Buffs + Goldens. Within half an hour after the flock’s arrival, the density of birds had dropped (at there were a few more goldens, rufous- backed negritos, and S. Lapwings). During the rest of the morning these moved