JP Myers 1973 Journal 25 November cntd 2 Km NNE from farmhouse, Estancia Medland, @ 35 km S of Juancho byroad, @ Riachuelo Buenos Aires Argentina. Buffalo and golden were present in the short grass fields between camp and the first pond but not nearly so thick as last night at dusk. During the rest of the day we explored the area between the first and the third (last) cottonwood wills W of the farmhouse. Our time was cut much too short because 2 hrs of it went into clogging out of a sandhole. Between the lowland, tall "bunch pidge" areas and upland callings and dunes (waterfowl) there is a thin strip of short grass field ~100 m wide that runs north from the farmhouse for over 10 km, the cottonwoods are spaced out along this strip. The diversity of the species in the short grass seems definitely enhanced by the proximity of these other two habitats. In addition to the ground living insectivores (golden, buffy, Conejero pipit, and Pseudoleistes (M.b.) +Tetrao lapwing, other flycatchers (Cribradu, spectacled tyrant, cattle tyrant, and bush-tailed flycatcher) are present. Also Agelaius thilius. Buffalo were present in quantity, but not as many as on the other side of the Arroyo. Saw 4 young Screamer chicks, and several (1 batch) Spotted Wolluera chicks. Many armadillos in the sand. The sand dunes are covered by vegetation, this far from the sea, and pitted with many small, and some large, pond/lagoons. Hivici told me that further out there towards the ocean the lakes get very deep (shoulder depth). W/R, Redorals, goldens, 1/4 gap at most at the ponds we saw. This area warrants more exploration. Several rhea. Returned to same campsite around 0600. During the afternoon it became cloudy and a strong wind developed from the N. Definitely threatening by dusk. I collected a golden (041) and a buffy (042) from the short grass field less than 50 m from the car at 2000. During the evening the wind continued to increase (out of N) and clouds moved up us from S. Started raining by 2200 and continued intermittently and violently until dawn. At some point during the night the wind shifted to NW out of the W, where it was at dawn.