Aythya is a genus of diving ducks. It has twelve described species. The name Aythya comes from the Ancient Greek word αυθυια (authuia), which may have...

The canvasback (Aythya valisineria) is a species of diving duck, the largest found in North America. Scottish-American naturalist Alexander Wilson described...

The tufted duck (or tufted pochard) (Aythya fuligula) is a small diving duck with a population of close to one million birds, found in northern Eurasia...

The greater scaup (Aythya marila), just scaup in Europe or, colloquially, "bluebill" in North America, is a mid-sized diving duck, larger than the closely...

The common pochard (/ˈpɒtʃərd/; Aythya ferina), known simply as pochard in the United Kingdom, is a medium-sized diving duck in the family Anatidae. It...

Baer's pochard (Aythya baeri) is a diving duck found in eastern Asia. It is a resident bird in North and Central China, and formerly bred in southeast...

The ferruginous duck (Aythya nyroca), also known as ferruginous pochard, common white-eye or white-eyed pochard, is a medium-sized diving duck from Eurosiberia...

The lesser scaup (Aythya affinis) is a small North American diving duck that migrates south as far as Central America in winter. It is colloquially known...

The redhead (Aythya americana) is a medium-sized diving duck. The scientific name is derived from Greek aithuia, an unidentified seabird mentioned by authors...

Aythya Canvasback (Aythya valisineria) Common pochard (Aythya ferina) Redhead (Aythya americana) Ring-necked duck (Aythya collaris) Hardhead (Aythya australis)...