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Range Description: Ring-necked Duck - Aythya collaris

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: 59,146 square km; Breeding only: 3,675,341 square km; Wintering only: 18,031 square km; Migration only: 544,524 square km
Caribbean - Resident year-round: 4,848 square km; Wintering only: 221,411 square km
Central America - Wintering only: 148,171 square km
Mexico - Wintering only: 1,600,648 square km
South America - Resident year-round: 1,024 square km
U.S.A. - Resident year-round: 596,282 square km; Breeding only: 538,206 square km; Wintering only: 3,957,622 square km; Migration only: 2,761,762 square km

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