Range Description: California Gull - Larus californicus

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 - Breeding only: 1,323,123 square km; Wintering only: 11,014 square km; Migration only: 458,699 square km
Mexico - Wintering only: 572,522 square km; Migration only: 151,258 square km
U.S.A. - Resident year-round: 27,269 square km; Breeding only: 639,893 square km; Wintering only: 281,764 square km; Migration only: 2,580,499 square km