Aythya

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

Species

Image	Scientific name	Common name	Distribution	Conservation status
	A. valisineria	Canvasback	North America	least concern
	A. ferina	Common pochard	Northern Europe into Asia	vulnerable
	A. americana	Redhead	North America, from as far north as Northern Canada to the lower United States	least concern
	A. collaris	Ring-necked duck	Northern United States and Canada	least concern
	A. australis	Hardhead	Australia, New Guinea, New Zealand, and the islands of the Pacific	least concern
	A. baeri	Baer's pochard	Southeast Russia and northeast China, migrating in winter to southern China, Vietnam, Japan, and India	critically endangered
	A. nyroca	Ferruginous duck	From Iberia and the Maghreb east to western Mongolia, south to Arabia	near threatened
	A. innotata	Madagascar pochard	Madagascar	critically endangered
	A. novaeseelandiae	New Zealand scaup	New Zealand	least concern
	A. fuligula	Tufted duck	Throughout temperate and northern Eurasia; occasional visitor to the United States and Canada	least concern
	A. marila	Greater scaup	Alaska, northern Canada, Siberia, and the northernmost reaches of Europe	least concern
	A. affinis	Lesser scaup	Alaska through western Canada to western Montana, Central America	least concern