Range Description: Arctic Tern - Sterna paradisaea

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: 4,835,964 square km; Migration only: 1,222,954 square km
Central America - Migration only: 241,844 square km
Mexico - Migration only: 1,652,340 square km
South America - Wintering only: 188,348 square km; Migration only: 5,399,019 square km
U.S.A. - Breeding only: 1,584,554 square km; Migration only: 2,741,685 square km