May. 1922 Claremont Calif. Thrasher, San Diego's Wren, N. House Wren, Bush tit, Pallid Wren-tit, Black-tailed Gnat- Catcher. The Least Vireo was a new bird to me and I was much interested in its habits and song. It kept to the low bushes or hanging low branches of the oak trees. The male sang constantly a song which said rhythm- ically, "Uh, do you see one? Yes, dear, I see you." Our Bridges Wall were many Cliff Swallow nests. When the note of a Cliff Swallow was heard as it circled above the building several male Eng. Sparrows flew up and clung to the rough plastered wall near the Cliff Swallow nests and began giving the call of a nesting Eng.Sp. They repeated the call very supple- atirly and sometimes flew into the nests where they sat with their heads out of the holes calling loudly. The swallows circled about and sometimes flew near the nest but I did not see one feed a sparrow. The Sparrows certainly seems to be trying to get food from the swallows.