Hawaiian Duck

Anas wyvilliana

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About the Hawaiian Duck

The Hawaiian duck (Anas wyvilliana) or koloa is a species of bird in the family Anatidae that is endemic to the large islands of Hawaiʻi. Taxonomically, the koloa is closely allied with the mallard (A. platyrhynchos). It differs in that it is monomorphic (with similarly marked males and females) and non-migratory. As with many duck species in the genus Anas, Hawaiian duck and mallards can interbreed and produce viable offspring, and the koloa has previously been considered an island subspecies of the mallard (Anas platyrhynchos). However, all major authorities now consider this form to be a distinct species within the mallard complex. Recent analyses indicate that this is a distinct species that arose through ancient hybridization between mallard and the Laysan duck (Anas laysanensis).

Source: Wikipedia

Classification

Scientific name: Anas wyvilliana
Family: Ducks, Geese, and Waterfowl
Order: Anseriformes

Similar species

Other members of the ducks, geese, and waterfowl family recorded in North America — a useful place to start if you are not certain of your identification.

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