1939 July 30 (contin.) At Santa Cruz 3-4 p.m.; 2 Loons (Common?) large, bills light. 1 Hudsonian Curlew, 8 Tattlers, 6 Black Turnstones, Heermann Gulls ab. July 31. Boulder Creek. While I was gardening I heard sharp shrill calls of young birds. I finally located them perched on a dead branch of a large tree up on the skyline of the slopes of Ben Lomond Mt. I think from their grey color and proportions they were Cooper Hawks. Lois saw an adult flying and said the tail was long, wings short, broad. She did not see the young birds but they stopped calling. On the way home we stopped at Mt. Vird Marsh. The tide was still high but since it was 4.8 there was some mud exposed. 130. Plover 40+, Longb. Curlew, a few; Hudsonian 8+ Willets 40+ At Dumbarton Bridge we could not find the white bird or the Grebes - Phalaropes 500-600 - Caspian Terns 30+ Least Terns 30+; L. Sandpipers a few, W. Sandpipers a few; White Pelicans 60+ Willets 200+ - closely packed on a dyke, Arocelos 68-100 - young abundant. A great aggregation of Barn Swallows (300+) were flying along the edge of the highway and whistling on the edges of the