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Aythya
Aythya ferina Sandwell 2
Common Pochard (Aythya ferina)
Scientific Classification
Kingdom Animalia
Phylum Chordata
Class Aves
Order Anseriformes
Family Anatidae
Aythyinae
Genus Aythya

Aythya is a genus of diving ducks. It has twelve described species. The name Aythya comes from the Ancient Greek word aithuia, which may have referred to a sea-dwelling duck or an auklet.

Aythya shihuibas was described from the Late Miocene of China. An undescribed prehistoric species is known only from Early Pleistocene fossil remains found at Dursunlu, Turkey; it might however be referrable to a paleosubspecies of an extant species considering its age (see also Greater Scaup).

The Miocene "Aythya" arvernensis is now placed in Mionetta, while "Aythya" chauvirae seems to contain the remains of two species, at least one of which does not seem to be a diving duck.

Species

Lesser Scaup (Eyton, 1838) (Aythya affinis)
Redhead (Eyton, 1838) (Aythya americana)
Hardhead (Eyton, 1838) (Aythya australis)
Baer's Pochard (Radde, 1863) (Aythya baeri)
Ring-necked Duck (Donovan, 1809) (Aythya collaris)
Common Pochard (Linnaeus, 1758) (Aythya ferina)
Tufted Duck (Linnaeus, 1758) (Aythya fuligula)
Madagascan Pochard (Salvadori, 1894) (Aythya innotata)
Greater Scaup (Linnaeus, 1761) (Aythya marila)
New Zealand Scaup (Gmelin, 1789) (Aythya novaeseelandiae)
Ferruginous Duck (Güldenstädt, 1770) (Aythya nyroca)
Canvasback (Wilson, 1814) (Aythya valisineria)
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