Aythya
Scaups, Pochards, and Allies * Canvasback * Ring-necked Duck * Ferruginous Duck * Tufted Duck * Common Pochard * Redhead * Lesser Scaup * New Zealand Scaup *
Somateria
Typical Eiders
* Common Eider *
* Common Eider *
Histrionicus
* Harlequin Duck *
Melanitta
Scoters
* Black Scoter * Surf Scoter *
* Black Scoter * Surf Scoter *
Clangula hyemalis
Long-tailed Duck
Bucephala
Goldeneyes and Bufflehead
* Bufflehead * Common Goldeneye *
* Bufflehead * Common Goldeneye *
Lophodytes
Hoodeed Merganser
Mergus
Typical Mergansers
* Common Merganser * Red-breasted Merganser *
* Common Merganser * Red-breasted Merganser *
Oxyura
Typical Stifftails
* Ruddy Duck * White-headed Duck *
* Ruddy Duck * White-headed Duck *
* Red-crested Pochard *