Description: The blue duck or whio (Hymenolaimus malacorhynchos) 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. Its Māori name, pronounced "fee-oo" (oo as in book) and commonly used in New Zealand English, is an onomatopoeic rendition of the males' call.
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