Crickshaw 1934 Dendroica a. auduboni Imi, above Laguna Dam, Imperial Co., Calif. Jan. 1, 1934 Two individuals seen foraging from tules and dead mesquite stubs out in slough; used flycatcher method of securing food most of the time, perching and flying out after insects; occasionally hovered near tules; plumage: yellow on throat distinct, also on sides and rump, not seen on crown; though chance not good. Same Jan. 3, 1934 Seen in same place yesterday and to-day behavior similar; were not seen at other parts of slough in vicinity; seem to spend most of time in relatively small area 50 ft. from edge of shore of slough. Harrisburg, 1765 ft., Yuma Co., Feb. 16, 1934. 6 or more individuals seen near pond of B[illegible] ranch; used fine wires surrounding and one crossing pond as perches, flying over and down to the water in flycatcher fashion for insects, mingled with and indifferent to Mountain Bluebirds occupied in same behaving in similar manner. One of individuals observed closely had no yellow- mark on crown though other four spots of yellow conspicuous.