Snow Goose (blue morph)

Blue morph birds are usually less numerous than white morphs. They have a white face, dark brown body, and white under the tail. Blue juveniles are mostly dark gray with head/neck becoming paler. The dark color of the blue morph Snow Goose is controlled by a single gene, with dark being partially dominant over white. If a pure dark goose mates with a white goose, the offspring will all be dark (possibly with white bellies). If two white geese mate, they have only white offspring. If two dark geese mate, they will have mostly dark offspring, but might have a few white ones too.