rounded and with patches of white on its under side. Length, 9.75 
inches. 
Migratory. Arrives early in May, leaves about the middle of September. Builds no 
nest, but lays its eggs on the ground or upon a stump. It is a nocturnal bird, lying closely 
in cover by day, and consequently not often seen ; at night, however, its call, clearly sug- 
gesting its common name, is frequently heard, a mournful, but not disagreeable, sound. 
In general appearance the Whip-poor-will resembles the Night Hawk. 
PEATE XI CHIMNEY SWIFT: 
Chetura pelagica. 
Sooty brown all over except the throat, which is light gray ; eyes 
surrounded by a black skin; wings long, extending when folded beyond 
the tail ; tail short, spiny, square. Length, 5.40 inches. 
Migratory. Arrives here about April 30, and leaves late in September. Although the 
Chimney Swift superficially resembles the Swallow, it, in fact, has no real affinity with 
that bird, and the common practice of naming it a Swallow is an error. — Its closest affinity 
is with the Hummingbird, which is its only superior in the art of flying. 
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