JP Myers 1973 Journal 13 July 26 cast 17 Km E of Luque, by road, Dept Central, Paraguay Birds which appears to be fairly coherent in its movements. There are a few smaller groups which joined with the large one to form that ~50 bird flock. Most birds are of the same size + in flight look like Pectorals. At no time did they approach closer than 100 yds though, so through binos, given my as yet unfamiliar eye for calidrids, they may or may not be what I think they are. When they land most disappear into the grass, which is like that of yesterday. With the scope I can occasionally pick one out. One walked within 2' of a southern lapwing (in front of) and it was considerably smaller than the S.L. therefore it was not a yellowlegs. But a few times some of the birds flashed all white tails (not when flying). This is confusing, - therefore positive ID awaits a closer approach + confirmation. Tink-take flycatcher was foraging nearby in very similar (if not identical) habitat. We drove on to San Bernardino (less than 10 km) and found no other SB, nor any similar habitat. Did watch a spectacled tyrant forage for a while. Aug Aug 29 Trans chaco highway Km 0-300 Dept Potosi Paraguay left Asuncion at 6am with Phil + crew and Lois, caught Piquete-cve ferry at 8am. temp 58°F at 6am. Sky 100% clear, slight breeze, from SSW/Th. Took data on work parakeet flocks throughout trip. Watched along road for shorbird (but saw none). Fewer shorks than last time (no jaloira) nothing exceptional (but then!) We did not dally very long for birdwatching. Arrived at the retiro of Eaton's ranch at Km 300 where Weeal's crew et.al are staying (approx 1km north of Trans Chaco Highway) at 8:30 1530pm. Weather remained beautiful for the whole trip. Km 300 W of Villa Hayes at Retiro on Eaton's Ranch, 1 km NE of Trans Chaco highway near Rio Verde river, Dept Potosi, Paraguay Just after arriving a flock of 16 shorbirds flew SE south past