JPMyers 1944 Journal Punta Raga, 15 km N. of San Clemente del Tuyu, by road, Pto de Gral. Lavalle, Provincia de Buenos Aires, Argentina 28 March cnt’d The situation with the birds was somewhat better. A total of perhaps 30 Sandliling, over 100 WR, especially in the Arroyo, with not so many out in the great mud flat, 1 Accipiter striatus, at least 30 Actitis macularia!! 1 semi-palmated plover, perhaps 30 Hudsonian godwit, over 50 Charadrius vociferus, [illegible] 6 American Oystercatcher. Also a large flock of Ruff and brown-hooded gulls, 6 Spoonbills — the dominant theme of all. The small shorebirds were speciating — some of them were operating in tight flocks of any size, most of them were foraging separately. The Actitis were all well up the Arroyo in an area with considerable streamside vegetation, including (on one side) some overhanging trees. Several of them were showing breast spots, suggesting some pre-alternate molt. Charadrius vociferus [illegible] other shorebirds (besides the Actitis) also showing original molt, with godwit breeding, allowed by fiscicollis and squatarola, which continue to have individuals varying greatly in the degree of molt, after which just now appears to be beginning signs of capital tract molt — nothing on backs, indeed only some feathers on the head. Observed one aggressive interaction between Charadrius vociferus and semi-palmated plover — the latter, the not the aggressor, appeared to win. As we reached the point on the lee side at the end of the walk, I searched the mud flat as far as the scope was effective, and detected a concentration of shorebirds over 500 m to the W. (we will be there when the tide goes out — it is not accessible from here without several km’s detour, because of the Arroyo.) By 130 cloud cover had increased to 40%, all high stratus, with a moderate South wind. Between 130 and 1430 we walked & cleg along the windward slope to a lagoon 1.5 km S. of the End of Punta Raga. During the time, the wind remained moderate from the S., clearing the sky to a 10% cover. Temperature rose to ~23°C. And, of course, the tide came in as we walked, reaching ‘high tide’ by 1500. Shorebird dispersion changed considerably as the afternoon began: we were departed, things were as detailed for this morning, i.e., considerably speciating, no longer groups. Charadrius vociferus was to be found — all along the beach, solitary or groups of 2-3, after regressing in territorial defense. White gulls even few in number, except for a broad exposed mud bar about 600 m along the route, Sardaban where we found a flock of 10. Sandliling remained solitary or groups of 2-3. 3 Ruddy turnstones stranding together, as well as 8 Knots (one in complete breeding plumage, most in complete winter). However, by the time that we had reached the end the tidal flow had made significant progress, and