J.P. Myers 1974 Journal Tower Llanos, Estancia Medeland, 35 km. S. of Juancho by road, Ptdo. de Madariaga, Provincia de Bs. Aires, Argentina 17 January contd always a set of birds thin: 4-5 WR, a few Rufous backed Negritos, an occasional Buffy, tea Lapuring or Golden. (The are L. flava). 18 January Arrived at tower 0620. Sky cloudless, temp at 0530 = 8°. Temp 0620 = 10°. No cows by tower (except dead bull in Arroyo). Should birds allow when we arrived - WR (32, none loaded, visible from tower), Buffies, Golden. 0640 there was some disturbance causing almost all birds within our vicin- itity to fly. By 0650 the area where they were had filled up again with birds WR on Llanos feeding low, cowpoxes, many feeding in 50 m stretch of sand between Arroyo + Llanos. Buffies both on Llanos + along edge. (Goldens all around, 12 GXL in Arroyo. First reading at 0655. 15 sample between 0655 and 1000. 4a At 1000 we left. Grid totals: Buffy 2.0 (0-6) 31; Golden Hover 1.6 (1-3) 24; Rufous backed negrito 0.1 (0-1) 2; Molothrus bonariensis - (0-1) 1. 4b: Buffy 6.3 (1-10) 95; Golden Hover 2.9 (2-9) 43; Rufous backed Negrito 0.2 (0-1) 3; Molothrus bonariensis - (0-1) 1; Pseudoleistes virescens 0.8 (0-7) 11; cow - (0-1) 1. Disappointed by the tardiness of our first reading of the grid. It looks as if the birds were much tighter when we arrived, and spread out between then + the first reading. I think that this was not an effect of our previous, but a dead part of the daily cycle. Further analysis.... 0745 Pichon (ranch hand) appeared to drain a dead bull ~75m from tower in the Arroyo. Did not appear to disturb the birds. Extensive notes on buffy behavior, inc. are definite territorial bird (see sp. accent) 1 km W. of Farmhouse on Farmhouse road, Estancia Medeland, Ptdo. de Madariaga, Provincia de Buenos Aires, Argentina After work at tower this morning we stopped by puddle by side of road where 15 January I'd collected territorial WR. Today there were more WR there at 1050. At least 6 WR there, perhaps 8-10. Puddles dried considerably, to the pichon now there