White-headed Steamer-Duck

The White-headed Steamer-Duck (Tachyeres leucocephalus) is a large species of waterfowl endemic to the southern coastal regions of Argentina. It is easily recognized by its massive size and the distinct white head that gives the species its common name.

The bird gets its name from its unique defensive behavior, where it rapidly beats its small wings in the water while paddling. This frantic, splashing motion creates a wake of white foam that looks remarkably like the paddle wheels of an old steamboat.

No, the White-headed Steamer-Duck is one of the completely flightless species within its genus. Because it spends its entire life on the water, it has evolved to have a very heavy body and tiny wings that are solely used for display and creating the 'steaming' motion on the water's surface.

This rare duck is endemic to the rugged, rocky coastlines of Argentina, specifically in the Chubut and Santa Cruz provinces. It feeds primarily on marine invertebrates, diving for shellfish and crabs in the cold waters off the Patagonian coast.