The Canada goose (Branta canadensis), also referred to considering that the Canadian goose, belongs towards Branta genus of geese, which contains species with largely black plumage, distinguishing them from the grey species of the Anser genus. The species name, canadensis, is a New Latin word meaning "of Canada." This species is 76-110 cm (30-43 in) long with a 127-180 cm (50-71 in) wing span. Males usually weigh 3.2-6.5 kg, (7-14 pounds) and can be very aggressive when defending territory. The