Ross's Goose

Ross's Goose is a diminutive relative of the Snow Goose, breeding in scattered central Arctic Canadian colonies and wintering mainly in California and along the Gulf Coast, often mixed into much larger Snow Goose flocks. Its small size and proportionally short bill are the most reliable field distinctions from its larger cousin.

Feathers are essentially identical in color and pattern to the Snow Goose—white body with black-tipped primaries—but noticeably smaller and shorter overall, matching this goose's more compact frame. There is no reliable feather-only way to separate the two species by pattern alone; size and, in the living bird, bill shape (short and stubby, lacking the Snow Goose's dark "grinning patch" along the bill edge) are the best clues. A rare dark morph exists but is far less common than in Snow Goose.

Sexes are alike. Juveniles show a grayish wash rather than pure white, whitening within their first year. Molt patterns mirror those of the Snow Goose, with a flightless period following breeding.

Breeds in a limited number of Arctic tundra colonies in central Canada, often alongside Snow Geese. Winters primarily in California's Central Valley and along the western Gulf Coast, using flooded fields and marshes.

Grazes on grasses, grain stubble, and marsh plants, frequently in large mixed flocks with Snow Geese where their smaller size becomes apparent. Nests on the ground in tundra colonies. Calls are similar to the Snow Goose but higher-pitched and given less frequently.