The race of Upland Goose found in the Falklands is unique. Scientists have observed that it is diverging in an evolutionary sense from its continental cousin, the Magellan goose. Falkland birds are sedentary and much tamer. Only occasionally, the smaller continental bird, in which the male also has barred underparts, is seen in the Islands. The Falkland race has never been recorded from the mainland of South America. The Falkland population may be as high as 150,000 pairs.
The male Upland Goose is a handsome bird with his white plumage barred and marked with black. He has black legs and is usually larger than his mate. In general, where the male Upland is white his mate is cinnamon brown. She has a rusty-brown head and neck, brown breast and flanks barred black and dark yellow legs. The female Upland Goose has a heavier head and bill, and her rusty neck colour continues into the barred breast.