Falcated Duck x Eurasian Wigeon hybrids (based on 4 birds) - copyright Joern Lehmhus
(plate ID: 0763)
Joern's excellent illustration shows two slightly different types and are based on four individuals, two wild birds from east Asia, a captive bird from England and a probably wild bird from Hungary.
Falcated Duck Anas falcata
Eurasian Wigeon Anas penelope