The Blue DuckHymenolaimus malacorhynchos is an rare New Zealand endemic. It is the only member of its genus. Its Māori name is whio. Its habitat is fast moving rivers. They have yellow eyes and reddish spots on the breast.We attempted to see it in several rivers where it had previously been sighted. Photos 4093 and 4100 were taken at the Otorhanga Kiwi House Zoo and photos 2003 to 2020 were taken at the Auckland Zoo.