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blue duck
The blue duck (''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'',〔 placed in the shelduck subfamily Tadorninae after previously being considered part of the paraphyletic "perching duck" assemblage. The Māori name, sometimes used in English, is whio (pronounced "fee-oh"), which is an onomatopoetic rendition of the males' call.
The blue duck is depicted on the reverse side of the New Zealand $10 banknote.
==Description==
The blue duck is a dark slate-grey with a chestnut-flecked breast and a paler bill and eye. The pinkish-white bill has fleshy flaps of skin hanging from the sides of its tip. The male's call is an aspirated whistle, and the female's is a rattling growl. The blue duck hatches with a green beak for just 8 hours after hatching; after which it then develops its final colour.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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