- Length: 5 inches Wingspan: 12.5 inches
- Sexes similar
- Juvenile similar to adult
- Small aerial bird with cigar-shaped body and crescent-shaped
- Short tail bluntly squared off
- Plumage sooty gray above with slightly paler rump
- Buff throat darkening to sooty gray on belly
- Underwings pale gray
All swallows have longer tails, usually with a notch or fork,
and broader wings. Black Swift and White-throated Swift have
forked tails and different patterning below. Vaux's Swift is
extremely similar but is somewhat smaller, with shorter wings, a
paler rump and throat, and a different call.
Length and wingspan from: Robbins, C.S., Bruun, B., Zim, H.S., (1966). Birds of North America. New York: Western Publishing Company, Inc.
Patuxent Bird Population Studies
Patuxent Bird Identification InfoCenter