Blue duck
| Blue duck | |
|---|---|
| Blue duck at Staglands, Akatarawa Valley | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Anseriformes |
| Family: | Anatidae |
| Genus: | Hymenolaimus G.R. Gray, 1843 |
| Species: | H. malacorhynchos |
| Binomial name | |
| Hymenolaimus malacorhynchos (Gmelin, JF, 1789) | |
| Subspecies | |
|
See text | |
Extant Probable original distribution where the blue duck is extinct | |
| Synonyms | |
|
Anas malacorhynchus (protonym) | |
The blue duck (Hymenolaimus malacorhynchos) or whio is a member of the duck, goose and swan family Anatidae endemic to New Zealand. It is the only member of the genus Hymenolaimus. Its exact taxonomic status is still unresolved, but it appears to be most closely related to the tribe Anatini, the dabbling ducks.
The whio is depicted on the reverse side of the New Zealand $10 banknote.