## Thursday, May 24, 2012

### >>Genus Aythya

Aythya

Aythya
Canvasback (Aythya valisineria)
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Anseriformes
Family:Anatidae
Subfamily:Aythyinae
Genus:Aythya
F. Boie, 1822
Species
12 species, see text
Aythya is a genus of diving ducks. It has twelve described species.
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

Listed alphabetically.
• Aythya affinis Lesser Scaup