(Chordeiles virginianus. 420.)
On the wing overhead after insects just before or at dusk; long, pointed wings showing a white patch; flight resembles that of [Chimney Swift]; sharp note, “skeep;” often nests on the flat roofs of city buildings. [Whip-poor-will.]
109. BLACK-BILLED CUCKOO. 12 in.
(Coccyzus erythropthalmus. 388.)
Bronzy olive-gray; white below; bill entirely black; only a little white on tail; movements like those of Yellow-billed Cuckoo; song, soft “coo-coo, coo-coo.” [Yellow-billed Cuckoo.] [Mourning Dove.]
110. GRAY-CHEEKED THRUSH. 7-1/2 in.
(Hylocichla aliciae. 757.)
Uniform olive; below white, very palely suffused with buff; cheeks gray tinged; breast and sides of throat, spotted; usually silent in Lincoln Park. [Olive-backed] and [other Thrushes.]
111. YELLOW-HEADED BLACKBIRD. 10-1/4 in.
(Xanthocephalus xanthocephalus. 497.)