possible female Anas hybrid (nearest bird), with Eurasian Wigeon (male) (A.penelope).
Possibly American Wigeon x Eurasian Wigeon (A.americana x A. penelope).

Partly raised wing showing the axillaries and median underwing coverts. These are white with pale brown shaft streaks and 'freckled' internal markings (largely white on American, usually grey on Eurasian).