Range Description: Ruby-crowned Kinglet - Regulus calendula

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: 112,685 square km; Breeding only: 6,201,065 square km
Mexico - Wintering only: 1,508,848 square km
U.S.A. - Resident year-round: 645,884 square km; Breeding only: 2,265,141 square km; Wintering only: 3,434,644 square km