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Aythya
genus of Anatidae within Anseriformes

trivial name latin name name specimens
Greater scaup
Aythya marila 		Aythya marila 018 018
Tufted duck
Aythya fuligula 		Aythya fuligula 007 007
Common pochard
Aythya ferina 		Aythya ferina 005 005
Ferruginous Pochard
Aythya nyroca 		Aythya nyroca 004 004
Hardhead
Aythya australis 		Aythya australis 001 001

Species comparison1)

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

Random specimens

Greater scaup
Aythya marila
Ferruginous Pochard
Aythya nyroca
Ferruginous Pochard
Aythya nyroca
Greater scaup
Aythya marila
Greater scaup
Aythya marila
Greater scaup
Aythya marila
Greater scaup
Aythya marila