Pitelka 1948 Sept. 6 4 mi E Stanton Ranch Hdgtr, Santa Cruz. an evening flight line leading to the east, observed also at Prisoner's Harbor. Found a pair of scrub- jays feeding one young out of the nest probably 10 days or so (see notes on Aphelocoma). Spent the night on the ridge. Sept. 7 Fog heavy, and I could do no hunting. Checked the oak grove where jays were taken while Pearson was out checking his traps, but there was no sign nor sound of additional young, or any other birds, for that matter, because of the fog apparently. Skinned remainder of birds obtained yes- terday. Obtained a yellow warbler and another western kingbird near camp. Passerna amoena still present, also Sarnerculus sandai- chensis. Sept. 8 Stayed in camp to skin birds accumulated yesterday. Sept. 9 Worked along main canyon again. Collected a male Allen Hummer in a late stage of molt. It was first detected by the characteristic wing sound. I have been puzzled by the absence adult males in the supposed resident population of Selasphorus sasin on this island. Possibly they have relatively been inactive because of molt and so easily over- looked. Several yellow warblers noted today, one in the