Range Description: Northern Harrier - Circus cyaneus

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: 267,094 square km; Breeding only: 5,810,133 square km; Wintering only: 1,157 square km
Caribbean - Wintering only: 205,172 square km; Migration only: 18,250 square km
Central America - Wintering only: 225,342 square km; Migration only: 156,531 square km
Mexico - Resident year-round: 32,631 square km; Wintering only: 1,810,638 square km; Migration only: 113,306 square km
South America - Wintering only: 275,423 square km
U.S.A. - Resident year-round: 3,616,795 square km; Breeding only: 2,587,137 square km; Wintering only: 2,683,689 square km