5 3/4-7 3/4" (15-20 cm). Bluish-black above, rufous below; long, deeply forked tail.
Similar Species- Cliff Swallow
A series of soft, twittering notes.
Breeds from portions of Alaska, east across much of Canada, and south through much of U.S. to central Mexico. Winters from Costa Rica through South America.
Eats insects (e.g., grasshoppers, dragonflies, leafhoppers, beetles, etc.). Rarely eats berries.
Constructs cup-shaped nest on building, bridge, culvert, or cliff. May nest in small colonies. When not breeding, may form flocks of up to thousands. Flies over open land and water and forages for prey; may occasionally take prey from ground or vegetation. When breeding, usually forages within few hundred meters of nest.
clutch size varies from 4-5 eggs. Incubation lasts 13-17 days (less often 11-19 days), and is performed mainly by female. Young are tended by both adults, fledge at 18-23 days, and stay together and are fed by parents for about 1 wk. Females first breed at 1 yr (a few males remain unpaired until 2 yr). Adults often have same mate in successive years. Females often have 2 broods, except in far northern range. Juveniles may help feed young of second brood. Breeding birds tend to return to same colony and sometimes same nest.
|Status:||Protected nongame species|
No references are available at this time.