Magellanic Steamer Duck Tachyeres pteneres

Magellanic Steamer Duck
Fuegian Steamer Duck
The Magellanic, also called Fuegian, (Flightless) Steamer Duck comes from the far south of Argentina and Chile. They are the heaviest ducks and have short, spurred wings, but they don't fly.
Male and female have similar plumage but males are heavier. Males are also are particularly aggressive and will kill ducks of other species on their territory using their wing spurs.
Magellanic Steamer Duck wings
Magellanic Steamer Duck 
                    camouflaged
Unlike other ducks, Steamers use their short, strong wings as paddles when swimming, giving the association to the paddle steamer which is in their common name.