Aythya

Aythya
Common pochard (Aythya ferina)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Anseriformes
Family:	Anatidae
Subfamily:	Aythyinae
Genus:	Aythya F. Boie, 1822
Species
12 species, see text

12 species, see text

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

Aythya shihuibas was described from the Late Miocene of China. Zelenkov (2016) transferred the species Anas denesi Kessler (2013), known from the late Miocene of Hungary, to the genus Aythya. An undescribed prehistoric species is known only from 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.

Based on the Taxonomy in Flux from John Boyd's website.

?A. baeri (Radde 1863) (Baer's pochard)

?A. innotata (Salvadori 1894) (Madagascan pochard)

A. nyroca (Güldenstädt 1769) (Ferruginous duck)

A. australis (Eyton 1838) (Hardhead)

A. americana (Eyton 1838) (Redhead)

A. ferina (Linnaeus 1758) (Common pochard)

A. valisineria (Wilson 1814) (Canvasback)

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