The Eastern ground parrot (Pezoporus wallicus), is one of the five ground-dwelling parrots in the world, the others being its closest relatives, the western ground parrot (Pezoporus flaviventris), the extremely rare night parrot (Pezoporus occidentalis), the somewhat closely related Antipodes parakeet (Cyanoramphus unicolor), and the unrelated highly endangered kakapo (Strigops habroptila) from New Zealand.