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Aythya
genus of Anatidae within Anseriformes

trivial name latin name name specimens
Greater scaup
Aythya marila 		Aythya marila 25 25
Tufted duck
Aythya fuligula 		Aythya fuligula 9 9
Common pochard
Aythya ferina 		Aythya ferina 5 5
Ferruginous Pochard
Aythya nyroca 		Aythya nyroca 4 4
Hardhead
Aythya australis 		Aythya australis 1 1

species comparison1)

1) According to Hartmann (2000a, 2000b and 2016)
genus Aythya: maximal number primaries: 10, maximal number secondaries: 18, maximal number retrices: 14

Random specimens

Greater scaup
Aythya marila
Greater scaup
Aythya marila
Greater scaup
Aythya marila
Ferruginous Pochard
Aythya nyroca
Tufted duck
Aythya fuligula
Greater scaup
Aythya marila
Greater scaup
Aythya marila
Tufted duck
Aythya fuligula