Ferruginous Duck also Ferruginous Pochard Aythya nyroca

Ferruginous Duck
Ferruginous Duck
Ferruginous Duck
The Ferruginous Duck, as its name suggests, is a rich, warm brown colour. The female is a slightly duller colour and a dark eye. The drake is more compact/ squat, a richer chestnut colour and with a light eye. Both have bluish grey bills with a black tip, white undersides and a white patch under their tails.
Ferruginous Duck
Ferruginous Duck
Ferruginous Pochard
Male (above) and female (below). Diving ducks native to Central/South Europe and Asia, wintering in Mediterranean/North Africa; these Ferruginous Ducks live in London.
Ferruginous drake
Ferruginous Duck female
The bill is similar to that of the Pochard, another diving duck to which the Ferruginous Duck is related, and to the Tufted Duck. (The white patch under the tail distinguishes it from the latter.)
Ferruginous Drake White-eyed Ferruginous drake
Ferruginous Duck Different bill
Ferruginous Duck
Ferruginous
Ferruginous female or rosybill
The female Ferruginous Duck is very similar to the female Rosybill Pochard; both are rich brown with white under-tail and white lower wings. The former is redder and more squat in appearance.
The latter has a slight face-shield where the top of her beak meets her face, with a flatter front line rather than the two angular prongs of the Ferruginous.