The cackling goose (Branta hutchinsii) constitute the smaller bodied forms of the Canada Goose, generally confined in breeding to arctic regions of the northwest. It has a higher-pitched voice than the Canada goose, which may account for the cackling epithet. Cacklings are small; some are barely larger than a Mallard. In contrast, the largest Canada Goose can weigh twice as much as a Cackling Goose. The Canada Goose has a longer neck, a more pointy beak; the Cackling goose has a smaller and squarer head with a steeper forehead, and has a squat thick neck. the Cackling Goose breeds in northern North America, migrating to winter further south in Canada and the USA.