The Superb Parrot,Barraband's Parrot, Barraband's Parakeet, or Green Leek ParrotPolytelis swainsonii is endemic to southeastern Australia. It is a monomorphic species (sexes indistinguishable) and one of three species in the genus Polytelis. They have a yellow crown, and a striking yellow and red bib. The juveniles are just plain green.
These were all photographed at the New Plymouth Zoo.