Kakapo became isolated from the remaining parrot species when New Zealand broke off from Gondwana, around 82 million years ago. Around 30 million years ago, the kakapo diverged from the genus "Nestor". Earlier ornithologists felt that the kakapo might be related to the ground parrots and night parrot of Australia due to their similar coloration, but this is contradicted by recent studies; rather, the cryptic colour seems to be adaptation to terrestrial habits that evolved twice convergently. The kakapo is a large, rotund parrot; the adult can measure from in length, and weight can vary from at maturity. Males are larger
Kakapo the habitable range for kakapo. Although the kakapo was extinct in many parts of the islands by the time Europeans arrived, including the Tararua and Aorangi Ranges, it was locally abundant in parts of New Zealand, such as the central North Island and forested parts of the South Island. Although kakapo numbers were reduced by Māori settlement, they rapidly declined after European colonisation. Beginning in the 1840s, Pākehā settlers cleared vast tracts of land for farming and grazing, further reducing kakapo habitat. They brought more dogs and other mammalian predators, including domestic cats, black rats and stoats. Europeans knew little