Blue duck/whio. NZ. Bernard Spragg photography

The blue duck/whio is only found in New Zealand. It is a nationally vulnerable species and faces a risk of becoming extinct..The blue duck is one of a handful of torrent duck species worldwide. It is a river specialist which inhabits clean, fast flowing streams in the forested upper catchments of New Zealand rivers. They are endemic to New Zealand so are found nowhere else in the world..(Hymenolaimus malacorhynchos)