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Aythya
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Canvasback (Aythya valisineria)
Scientific classification Red Pencil Icon
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Superorder: Galloanserae
Clade: Odontoanserae
Order: Anseriformes
Family: Anatidae
Subfamily: Anatinae
Tribe: Aythyini
Genus: Aythya
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 2 species, at least one of which does not seem to be a diving duck.[2]

Description

Bay ducks are medium to large ducks that often gather together in impressive rafts on coastal bays and large lakes in the winter.[3] They regularly hybridise with each other; often resembling other members of this genus and can be mistaken for a rare Tufted Duck or Common Pochard, which are vagrants to North America.[3]

Species

Listed alphabetically.

References

  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)
  3. ^ a b Dunn, Jon L. and Alderfer, Jonathan (2011). National Geographic Completely Birds of North America. National Geographic Society. ISBN 9781426213731. 


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