The Chiloe Wigeon (Anas sibilatrix) is one of three species of wigeon in the dabbling duck genus Anas. This duck is found in southern South America, on freshwater lakes, marshes, lagoons and slow flowing rivers. It breeds on the Falkland Islands, Argentina, Uruguay, and Chile. It migrates to southeastern Brazil for the winters.
Factsheet: Chiloe Wigeon Anas sibilatrix