Range Description: Glaucous-winged Gull - Larus glaucescens

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: 127,353 square km
Mexico - Wintering only: 149,061 square km
U.S.A. - Resident year-round: 588,469 square km; Breeding only: 107,339 square km; Wintering only: 85,909 square km