Range Description: Pacific-slope Flycatcher - Empidonax difficilis

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:

Canada - Breeding only: 412,910 square km
Mexico - Breeding only: 5,788 square km; Wintering only: 299,431 square km
U.S.A. - Breeding only: 444,854 square km