夏威夷鴨

分类位置

同属物种

非洲黑鴨

African Black Duck

北美黑鴨

American Black Duck

安島灰鴨

Andaman Teal

斑頭鴨

Andean Teal

奧克蘭鴨

Auckland Teal

馬島麻斑鴨

Bernier's Teal

形态与习性

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 o