Range Description: Cassin's Kingbird - Tyrannus vociferans

Summary of the extent of the breeding, wintering, migration and year-round range of this species in the Western Hemisphere, including Canada, U.S.A. and Mexico:

Central America - Wintering only: 710 square km
Mexico - Resident year-round: 469,805 square km; Breeding only: 468,218 square km; Wintering only: 203,832 square km
U.S.A. - Resident year-round: 8,838 square km; Breeding only: 491,217 square km