Cogswell 1949 Vermivora ruficapilla Aug. 10. 2:30 p.m. Big Lagoon, Humboldt Co., Calif. Along the road running W. of Maple Creek at the lower edge of the burned over slope about 1 mi. from camp, many warblers were in the alder & elderberry thickets. I collected a male of this species (#10) and saw a f, & also saw about 10 Wilsonia pusilla and 2 Dendroica aestiva. They all came readily to a poor imitation of a screech owl. (in bottom valley) The average height of the thickets here is about 15 feet, and it is nearly continuous with only a few remnants of old side roads still not closed in. There is an understory of lesser & semi shrubs here & there on the edge facing the road, but I doubt if it is of importance except on such edges. Slopes of mountain just to the west are of different type of thicket. Aug. 17 One f was observed closely as it alighted in a small myrica tree on the "chaparral" covered slope of W side of first ridge E. of the lagoon.