Common Pochard, Aythya ferina "Pochard (Aythya ferina)" by Rich B-S via Flickr, Creative Commons Attribution. | Tufted Duck, Aythya fuligula Richard Bartz, Munich Makro Freak via Wikicommons, Creative Commons Attribution ShareAlike. |
Greater Scaup, Aythya marila Per-Arne Larsen Creative Commons Attribution ShareAlike. |