Chiloé Wigeon
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Mareca sibilatrix
Found in South America including the Chiloé Archipelago.
Adults have an iridescent green-blue cap on its head, and a bluish grey bill with a black tip.
The cheeks and forehead are white, the eyes are dark brown, and there is a white auricular patch.
The neck and occipital part of the head are black.
The breast is barred black and white and the plumage of the wings is gray and white.
The flanks of males are rust colored, and light brown on females.
The legs and feet are gray.
Juveniles resemble adult birds, but the rust coloring on the flanks is diminished or absent.
It has a whistling call.