Range Description: Willow Ptarmigan - Lagopus lagopus

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: 4,929,165 square km; Wintering only: 1,194,762 square km
U.S.A. - Resident year-round: 1,483,319 square km