General Description: Peregrine Falcons (Falco peregrinus) are big falcons of the open sky that hunt other birds and sometimes bats. Peregrines are dark above, light under, and have a dark hood and mustache mark. The wing-pits (armpits) are white (compare with Prairie Falcons, which have a dark armpit). If you see a big falcon in the desert, check the armpits.

Falcons are recognized from other birds of prey by the long, narrow, pointed wings.

Taxonomy: Falconiformes, Falconidae, Falconinae

Favored Habitat: Open areas with places to perch. Nests on cliffs and urban buildings.

Where to Find: Fairly common around Las Vegas. Here, they are most often seen hunting in the urban jungle and on cliffs above the Colorado River. Out in the desert, listen for them -- they are often heard long before they are seen.