Hawaiian Duck

a.k.a. Koloa

Anas wyvilliana

A Hawaiian drake
Photo courtesy of Clyde Robinson & Avian Empire

This endangered species is native (obviously) to Hawaii. Sadly, the population is decreasing. It differs from the related Mallard in that the males have the same plumage as the females. It is also nonmigratory.

Threats to the remaining population include habitat destruction, predation by introduced predators, and increasingly, hybridization with Mallards.

Hawaiian Links:

The Wildfowl Omnibus




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