White-winged Duck Asarcornis scutulata

Also known as White-winged Wood Duck, this species was formerly placed in the genus Cairina along with Muscovy Duck but now considered to be more closely related to the pochards. It is rare in the wild, in Southeast Asia, and also uncommon in captivity (where these photos were taken).

captive White-winged Ducks, private collection at Wereham (Norfolk, UK), 5th May 2017