Branta canadensis

B. canadensis in its non-native range is a large goose with a dark brown body, black head and neck and white cheeks. Its honking call is very loud and easily recognised. Within the natural range, some races are no larger than the snow goose Anser caerulescens (Chen caerulescens) and there is considerable variation in plumage tones. For more details, see for example Kear (2005).