Rolf Nussbaumer / Ferruginous duck, male {Aytha nyroca} Samos, Greece.

Marko Matesic/ BIA / Ferruginous Duck (Aythya nyroca) pair on pond, Krk, Croatia

Marko Matesic/ BIA / Ferruginous Duck (Aythya nyroca), Krk, Croatia

Dong Lei / Baer's pochard (Aythya baeri) with White-eyed pochard (Aythya nyroca) Chengdu City, Sichuan Province, China.

Dong Lei / Mixed group of Baer's pochards (Aythya baeri) with White-eyed Pochards (Aythya nyroca) Chengdu City, Sichuan Province, China.

Markus Varesvuo / Ferruginous Duck (Aythya nyroca) in flight. Hungary. May

Ralph Martin / Ferruginous Duck (Aythya nyroca), Baden-Wurttemberg, Germany

Bence Mate / Ferruginous duck {Aythya nyroca} Pusztaszer, Hungary

Rod Williams / Ferruginous duck (Aythya nyroca) male on water, captive, from Southern Europe and Asia

Rod Williams / Male Ferruginous Duck (Aythya nyroca) bathing in water. Captive. Endemic Europe to Mongolia. Captive, UK, March.

Loic Poidevin / Ferruginous Duck (Aythya nyroca) on water. Breton Marsh, French Atlantic Coast, October.

Edwin Giesbers / Ferruginous Duck (Aythya nyroca) on water. The Netherlands.

Edwin Giesbers / Ferruginous Duck (Aythya nyroca) on water. The Netherlands.

Edwin Giesbers / Ferruginous Duck (Aythya nyroca) on water, in profile. The Netherlands.

Edwin Giesbers / Ferruginous Duck (Aythya nyroca) on water. The Netherlands.

Edwin Giesbers / Ferruginous Duck (Aythya nyroca) on water by reeds. The Netherlands.

David Tipling / Ferruginous Duck {Aytha nyroca} male on water, UK, captive

Alan Williams / Male Ferruginous duck (Aythya nyroca) feral bird, Norfolk, UK, March

Alan Williams / Male Ferruginous duck (Aythya nyroca) feral bird on water, Norfolk, UK, March

Wild Wonders of Europe / Varesvuo / Ferruginous duck (Aythya nyroca) flock in flight, Pusztaszer, Hungary, May 2008

Wild Wonders of Europe / Varesvuo / Ferruginous duck (Aythya nyroca) in flight, Pusztaszer, Hungary, May 2008

Wild Wonders of Europe / Varesvuo / Ferruginous duck (Aythya nyroca) flock in flight, Pusztaszer, Hungary, May 2008

David Kjaer / Ferruginous duck (Aythya nyroca) male, captive, from Southern Europe and Asia

Rolf Nussbaumer / Male Ferruginous Duck (Aythya nyroca) dabbling, Samos, Greek Island, Greece. May 2000

Jose B. Ruiz / Male Ferruginous duck {Aythya nyroca}Spain

Jose B. Ruiz / Female Ferruginous duck {Aythya nyroca} resting, Spain.

Rod Williams / Ferruginous duck {Aythya nyroca} male. Captive UK, occurs W. Europe to W. Mongolia

DAVID TIPLING / Ferruginous duck male in eclipse {Aythya nyroca} UK

Duncan Usher / Ferruginous Duck (Aythya nyroca) male, Bavarian Forest, Bavaria, Germany

Martin Willis / Ferruginous Duck (Aythya nyroca) males and females, Yunnan Province, China

Joel Sartore / Photo Ark / Ferruginous ducks (Aythya nyroca) pair, portrait, Sylvan Heights Bird Park. Captive.

Joel Sartore / Photo Ark / Ferruginous duck (Aythya nyroca) male, head portrait, Sylvan Heights Bird Park. Captive.

Joel Sartore / Photo Ark / Ferruginous duck (Aythya nyroca) male, portrait, Sylvan Heights Bird Park. Captive.

Joel Sartore / Photo Ark / Ferruginous duck (Aythya nyroca) male, portrait, Palm Beach Zoo. Captive.

Joel Sartore / Photo Ark / Ferruginous duck (Aythya nyroca) male, head portrait, Palm Beach Zoo. Captive.