Fuegian Steamer Duck

The Fuegian Steamer Duck (Tachyeres pteneres), also called the Magellanic Flightless Steamer Duck, is a flightless duck from South America. It belongs to the steamer duck genus Tachyeres. It inhabits the rocky coasts and coastal islands from southern Chile and Chiloé to Tierra del Fuego, switching to the adjacent sheltered bays and lakes further inland when breeding.
It is a massively built waterfowl at 3.5–7 kg (7.7–15 lb) and 65–84 cm (26–33 in), with the males noticeably larger than the females. The wingspan is 85–110 cm (33–43 in). This species outweighs any other wild species called "duck", although this species is only distantly related to most true ducks (for example of the genus Anas).