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|Family||Ducks, Geese and Waterfowl - Ænder, Gæs og Vandfugle - Patos, Gansos, Cisnes y Mergos (Anatidae)|
|Species||Eurasian Wigeon (Mareca penelope)|
|Locality||Royal Golf Club, Amager, Denmark|
Males and females. Some males completely transformed to breeding plumage, others lacking a good deal, but all having pure white wing coverts.
The all-brown females I don't think are ageable here.