Range Description: Redhead - Aythya americana

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 - Resident year-round: 22,658 square km; Breeding only: 1,630,956 square km; Migration only: 421,840 square km
Caribbean - Wintering only: 125,597 square km
Central America - Wintering only: 3,979 square km
Mexico - Resident year-round: 111,352 square km; Wintering only: 1,474,009 square km
U.S.A. - Resident year-round: 353,621 square km; Breeding only: 2,934,144 square km; Wintering only: 2,848,865 square km; Migration only: 1,795,591 square km