Global Bird Index - IOC15.1
Canvasback
English name：Canvasback
Scientific name：Aythya valisineria
Redhead
English name：Redhead
Scientific name：Aythya americana
Common Pochard
English name：Common Pochard
Scientific name：Aythya ferina
Hardhead
English name：Hardhead
Scientific name：Aythya australis
Madagascar Pochard
English name：Madagascar Pochard
Scientific name：Aythya innotata
Baer's Pochard
English name：Baer's Pochard
Scientific name：Aythya baeri
Ferruginous Duck
English name：Ferruginous Duck
Scientific name：Aythya nyroca
New Zealand Scaup
English name：New Zealand Scaup
Scientific name：Aythya novaeseelandiae
Ring-necked Duck
English name：Ring-necked Duck
Scientific name：Aythya collaris
Tufted Duck
English name：Tufted Duck
Scientific name：Aythya fuligula
Greater Scaup
English name：Greater Scaup
Scientific name：Aythya marila
Lesser Scaup
English name：Lesser Scaup
Scientific name：Aythya affinis