Blue Duck
NameBlue Duck
Common NameBlue Duck
Scientific NameHymenolaimus malacorhynchos
FamilyAnatidae
Wingspan (cm)72.5
Length (cm)54.5
Weight (g)840
Plumage DetailsOverall slate-blue to grey plumage, with a distinctive chestnut-speckled breast. The head is dark, eyes are bright yellow, and the bill is white with a black tip and fleshy pink flaps at the base.
Vocalization / CallMales produce a high-pitched, whistling 'whio' sound, which gives the bird its Māori name. Females typically make a low growl or rasping call.
Primary Dietinsectivore
Primary Habitatsmountain, forest
Conservation Statusendangered
Geographic RangeEndemic to New Zealand, found in suitable fast-flowing, clear rivers and streams throughout the North and South Islands.
Identifying Featuresslate-blue plumage, chestnut-speckled breast, white bill with black tip and fleshy flaps, bright yellow eyes, preference for fast-flowing rivers
Description
The Blue Duck, or Whio, is a unique torrent duck endemic to New Zealand, perfectly adapted to life in fast-flowing rivers. It exhibits a distinctive slate-blue plumage with chestnut spotting on its breast and a specialized bill for feeding on aquatic invertebrates.
