This description focuses on the snow geese that inhabit North America. Snow geese are a species of large waterfowl that are native to the continent. They are migratory birds, traveling between their breeding grounds in the Arctic tundra and their wintering grounds in the southern United States
From Wikipedia
The snow goose is a species of goose native to North America. Both white and dark morphs exist, the latter often known as blue goose. Its name derives from the typically white plumage. The species was previously placed in the genus Chen, but is now typically included in the "gray goose" genus Anser.