Range Description: Bufflehead - Bucephala albeola

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: 4,308,639 square km; Wintering only: 250,499 square km; Migration only: 732,671 square km
Caribbean - Wintering only: 106,896 square km
Mexico - Wintering only: 1,443,400 square km
U.S.A. - Resident year-round: 82,031 square km; Breeding only: 450,340 square km; Wintering only: 6,050,639 square km; Migration only: 2,070,146 square km