The Upland Goose or Magellan Goose (Chloephaga picta) is a South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

n member of the duck

Duck

Duck is the common name for a large number of species in the Anatidae family of birds, which also includes swans and geese. The ducks are divided among several subfamilies in the Anatidae family; they do not represent a monophyletic group but a form taxon, since swans and geese are not considered...

, goose

Goose

The word goose is the English name for a group of waterfowl, belonging to the family Anatidae. This family also includes swans, most of which are larger than true geese, and ducks, which are smaller....

 and swan

Swan

Swans, genus Cygnus, are birds of the family Anatidae, which also includes geese and ducks. Swans are grouped with the closely related geese in the subfamily Anserinae where they form the tribe Cygnini. Sometimes, they are considered a distinct subfamily, Cygninae...

 family Anatidae

Anatidae

Anatidae is the biological family of birds that includes ducks, geese and swans. The family has a cosmopolitan distribution, occurring on all the world's continents except Antarctica and on most of the world's islands and island groups...

. It is in the shelduck subfamily Tadorninae

Tadorninae

The Tadorninae is the shelduck-sheldgoose subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the geese and swans....

. Males have a white head and breast, whereas the females are brown with black-striped wings and yellow feet, and could be mistaken for Ruddy-headed Geese

Ruddy-headed Goose

The Ruddy-headed Goose is a large sheldgoose, which breeds in southernmost South America.It breeds on open grassy plains in Tierra del Fuego, Chile and the Falkland Islands. The South American birds are now very rare. They winter on lowlands in southern Argentina, some distance north of the...

. These birds are 60–72.5 cm (23.6–28.5 in) long and weigh 2.7 kilogram. They are found in open grasslands.
Upland Geese are noted in Chapter VI of The Origin of Species

The Origin of Species

Charles Darwin's On the Origin of Species, published on 24 November 1859, is a work of scientific literature which is considered to be the foundation of evolutionary biology. Its full title was On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the...

for having vestigial webbing between their toes.