The Ross’ Goose is a small goose, similar in appearance to the Snow Goose. Like the Snow Goose, the Ross’ Goose has a light and dark morph, although the dark-morph Ross’ Goose is extremely rare. The light morph is white, and the dark morph is gray with a white head. Both morphs have black primaries. The bill is small and lacks the ‘grin-patch’ seen on the Snow Goose. Juveniles are mostly gray.