General

Peregrine Falcon: Medium-sized, robust falcon with blue-gray upperparts, plain breast, and heavily barred sides, belly, and leggings. Head has a black hood and sideburns. Western race has darker underparts. Sexes are similar. Juvenile has brown upperparts and streaked underparts.

Range and Habitat

Peregrine Falcon: Breeds from Alaska and the Canadian arctic south locally through the mountainous west, and sparingly in the east. Spends winters on coasts north to British Columbia and Massachusetts. Preferred habitats include tundra, savannas, coasts, mountains, and tall buildings.

Breeding and Nesting

Peregrine Falcon: Two to six buff or white eggs, heavily marked with brown and red, are laid in a nest, often built by other species, set high on a cliff or tall building. Incubation ranges from 28 to 32 days and is carried out by the female.

Foraging and Feeding

Peregrine Falcon: Preys mostly on birds, including doves, pigeons, shorebirds, waterfowl, and passerines; also eats small reptiles and mammals. Often soars to hunt, diving to stun its prey in midair.

Vocalization

Peregrine Falcon: Call is a rasping "kack-kack-kack-kack", usually given at the nest.

Similar Species

Peregrine Falcon: Merlin is smaller, has a less-distinct moustache stripe and more strongly barred tail. Prairie Falcon has black underwing patch and lacks strong moustache stripe. Gyrfalcon is larger with broader wings and tail, and lacks the bold moustache stripe.