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;^[1] it might however be referrable to a paleosubspecies of an extant species considering its age (see also Greater Scaup).

The Miocene^{[verification needed]}"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.^[2]

Species

Listed alphabetically.

• Aythya affinis Lesser Scaup
• Aythya americana Redhead
• Aythya australis Hardhead
• Aythya baeri Baer's Pochard
• Aythya collaris Ring-necked Duck
• Aythya ferina Common Pochard
• Aythya fuligula Tufted Duck
• Aythya innotata Madagascar Pochard
• Aythya marila Greater Scaup
• Aythya novaeseelandiae New Zealand Scaup
• Aythya nyroca Ferruginous Duck
• Aythya valisineria Canvasback

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  Canvasback Aythya valisineria

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  Common Pochard Aythya ferina

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  Redhead Aythya americana

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  Ring-necked Duck Aythya collaris

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  Hardhead Aythya australis

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  Baer's Pochard Aythya baeri

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  Ferruginous Duck Aythya nyroca

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  Madagascar Pochard Aythya innotata

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  New Zealand Scaup Aythya novaeseelandiae

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  Tufted Duck Aythya fuligula

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  Greater Scaup Aythya marila

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  Lesser Scaup Aythya affinis

References

Wikimedia Commons has media related to: Aythya

Wikispecies has information related to: Aythya

1. ^ Louchart, Antoine; Mourer-Chauviré, Cécile; Guleç, Erksin; Howell, Francis Clark & White, Tim D. (1998): L'avifaune de Dursunlu, Turquie, Pléistocène inférieur: climat, environnement et biogéographie. C. R. Acad. Sci. Paris IIA 327(5): 341-346. [French with English abridged version] doi:10.1016/S1251-8050(98)80053-0 (HTML abstract)
2. ^ Worthy, Trevor H.; Tennyson, A.J.D.; Jones, C.; McNamara, J.A. & Douglas, B.J. (2007): Miocene waterfowl and other birds from central Otago, New Zealand. J. Syst. Palaeontol. 5(1): 1-39. doi:10.1017/S1477201906001957 (HTML abstract)

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