Anas

trivial name latin name
Northern Pintail Anas acuta
White-cheeked pintail Anas bahamensis
Common Teal Anas crecca
Andean Tea Anas flavirostris
Grey Teal Anas gracilis
Hottentot Teal Anas hottentota
Meller's Duck Anas melleri
Mallard Anas platyrhynchos
Spot-billed Duck Anas poecilorhyncha
Garganey Anas querquedula
Eastern Spot-billed Duck Anas zonorhyncha

comparison of wing and tail configuration