Range Description: Thick-billed Murre - Uria lomvia

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: 718,678 square km; Breeding only: 360,599 square km; Wintering only: 479,743 square km
U.S.A. - Resident year-round: 124,047 square km; Wintering only: 913,134 square km