The snow goose is a medium-sized goose that has two color morphs, white and "blue." These used to be considered separate species. Both forms have pink bills with a black “lipstick” marking, and pink legs and feet. The white morph is mostly white, with black wingtips. The blue morph is mostly grayish brown overall, with a white head and neck, and white on the underside of the wing. Intermediate forms occur, and immatures look different from adults. The calls are loud and nasal. Similar species: Ross’s goose has a shorter neck and bill and is the size of a mallard. It lacks the “lipstick” or “grinning” marks on the bill and instead has a blue-green warty patch saddling the upper bill near the base. Note that hybrids between snow goose and Ross’s goose are not rare.
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