Range Description: Wood Duck - Aix sponsa

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: 84,573 square km; Breeding only: 1,150,233 square km
Caribbean - Resident year-round: 111,406 square km; Wintering only: 10,190 square km
Mexico - Wintering only: 1,117,838 square km
U.S.A. - Resident year-round: 3,870,341 square km; Breeding only: 1,012,865 square km; Wintering only: 1,505,538 square km