1939 Los Banos, were circling about all the time we were in the refuge (2½ hrs.) The most abundant birds in the refuge were the herons: St. Blue, Black-crowned Night, American Egrets (and Snowy Egrets), Mallards. Many pairs of Mallards were seen but there were also large groups that rose from the larger ponds. Marsh Harriers were numerous and very active, dropping again and again, as if to pounce on some mayowadles, Swallows, annual. Blackbirds, Kingbirds, Tule Breezes, Yellow Throats and Yellow Warblers were abundant. A Shrikes' nest contained young birds. One Western Tanager was in a willow tree on the edge of a tule-summered pond. About 10 a.m. we returned to the meadows visited yesterday afternoon. The flight was much better as the meadows toward the west and we were able to see, Indomuch better. We found several Dovetiters, and one Wilson Phalarope in addition to the ones seen before. In a small space next the Standard Hunting Club there was a Snowy Egret, a Black-crowned Night Heron and a Bittern. The Egret after lifted the plumes on its head and body and made a rush at the Heron. Suddenly a pair of Kingbirds rushed at the Egret, went past, circled and dropped again and again almost striking the Egret's head. Each time the Egret raised it plumes ducked its head and covered its body to dodge the blows.