Range Description: Masked Booby - Sula dactylatra

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:

Caribbean - Breeding only: 18,031 square km; Wintering only: 2,515,332 square km
Central America - Wintering only: 896,821 square km
Mexico - Breeding only: 2,865 square km; Wintering only: 2,491,820 square km
South America - Breeding only: 4,435 square km; Wintering only: 1,586,416 square km
U.S.A. - Breeding only: 1,404 square km; Wintering only: 2,255,824 square km