The
 kakapo is a large, flightless parrot from New Zealand and one of the 
rarest birds of all, with only 124 individuals alive today. The main 
reason for its decline is predation by introduced mammals, particularly 
feral cats.
 
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The 
New Zealand parrot superfamily (
Strigopoidea)
 consists of three 
genera of 
parrots, 
Nestor, 
Strigops and the fossil 
Nelepsittacus.
 The genus 
Nestor consists of the 
Kea, 
Kākā, 
Norfolk Island Kākā and 
Chatham Island Kākā,
 while the genus 
Strigops contains the iconic 
Kākāpō.
 All extant species are 
endemic to 
New Zealand. The species of the genus 
Nelepsittacus were endemics of the main islands, while the two extinct species of the genus 
Nestor were found at the nearby oceanic islands like 
Chatham Island of New Zealand, and 
Norfolk Island and 
Phillip Island of 
Australia. The modern common species names, 
Kea, 
Kākā and 
Kākāpō, are the same as the original 
Māori names.
The 
Norfolk Kaka and the 
Chatham Kaka have become extinct in recent times,
 while the extinct species of the genus 
Nelepsittacus
 have been extinct for 16 million years. All extant species, the Kākāpō,
 Kea, and the two subspecies of the Kākā, are threatened.
 Human activity caused the two extinctions and the decline of the other three species. Settlers introduced 
invasive species, such as 
pigs and 
possums,
 which eat the eggs of ground nesting birds, and additional declines 
have been caused by hunting for food, killing as agricultural pests, 
habitat loss, and introduced 
wasps.
The family diverged from the other parrots around 82 million years ago when New Zealand broke off from 
Gondwana, while the ancestors of the genera 
Nestor and 
Strigops diverged from each other between 60 and 80 million years ago.
 
 
 
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