JPMyers 1973 Journal 500m N of Farmhouse, Estancia Wiedeland 35km S of Tucumcdo by road, Pcia de B.A., Arg. 6 December cntd. spaced at 150m interval. The murgids are 36° and 3c, the latter being the [nillegible] habitat. short northern work. They are both similar in structure to 3a, with water covering grass fields. 3b is at the S end of a pond; 3c at the south. - One flock of 7 pectorals was on the 3b before placement. 7 December Short light rain beginning 0600. Up at 0530. Within 1/2 hr the sky began to clear, and by 0730 cloud cover was less than 80%. Walked with Maurice Rumball and Christopher Leadly (who appeared yesterday afternoon) out to Grid 3. Considerable numbers of chicks flying southwesterly. Also many shorebirds in air. Rumball was able to point out several birds that not identified, particularly in the pampas grass habitat to the east of the Eucalyptus grove, Pseudocolopteryx flaviventer (Garibaldi), Phaellodromus striaticollis (Fickel's ruddered spinetail), an unidentified Asturine, Rallus sanguinolentus (Plumbeous rail), Rhyncholus rufescens (Red-winged tinamou). On the ponds on which Grid 3 was located were sizable flocks of shorebirds foraging, primarily WR and Lyleg, but including Pectorals, Greater Lyleg and Golden Plover as well. The tower 1km W of Arroyo Chico Bridge, Estancia Wiedeland, Pcia de B.A., Argentina Rumball carried us and stakes for the grids near the tower on Arroyo Chico via his car. A small flock of WR was on the Arroyo shoreline, dispersed evenly in a line along the edge of the water. Immediately there were WR, a #bodwit, and a Ch. fallaxetica down to the S at the center of the arroyo, where the Arroyo broadens and becomes shallower, providing more extensive habitat; the WR by the tower appeared to be behaving territorially, with territories ~3m long (some larger). In the lagoon to the W of the arroyo creek many Buffles, most of them foraging in small flocks. On the W end of the lagoon, a small pond had been created by the recent rain. WR, Pectorals, and Baird's (10+) were foraging within; also Lyleg and Golden Plover; the southern end of the pond was extensive enough to have attracted Coscoroba swan. However considerable shallow water at this end of the field, with indications of grass and much or more deep. After Rumball left, Lori + I placed stakes on Grid 4, the 'buffy' grid beneath the tower.