The New Zealand parrot superfamily, Strigopoidea, comprises no less than three genera of parrots – Nestor, Strigops, the fossil Nelepsittacus, and presumably the fossil Heracles. The family Nestor comprises the kea, kaka, Norfolk Island kaka and Chatham Island kaka, while the class Strigops contains the notable kakapo. All surviving species are endemic to New Zealand. The types of the sort Nelepsittacus were endemics of the fundamental islands, while the two wiped out types of the family Nestor were found at the close by maritime islands like Chatham Island of New Zealand, and Norfolk Island and contiguous Phillip Island.
The Norfolk kaka and the Chatham kaka have gotten wiped out later, while the types of the variety Nelepsittacus have been wiped out for 16 million years. Every single surviving species, the kakapo, kea, and the two subspecies of the kaka, is compromised. The human action caused the two terminations and the decrease of the other three species. Pioneers presented obtrusive species, like pigs and possums, which eat the eggs of ground-settling birds, and extra decreases have been brought about by chasing for food, killing as farming irritations, environment misfortune, and presented wasps.
The superfamily wandered from different parrots around 82 million years prior when New Zealand severed from Gondwana, while the precursors of the genera Nestor and Strigops veered from one another somewhere in the range of 60 and 80 million years prior.
Systematics
No agreement existed in regards to the scientific categorization of Psittaciformes up to this point. The position of the Strigopoidea species has been variable before. This superfamily is one of three superfamilies in the request Psittaciformes; the other two families are Cacatuoidea (cockatoos) and Psittacoidea (genuine parrots). While a few taxonomists incorporate three genera (Nestor, Nelepsittacus, and Strigops) in the family Strigopidae, others place Nestor and Nelepsittacus in the Nestoridae and hold just Strigops in the Strigopidae. Customarily, the types of the superfamily Strigopoidea were put in the superfamily Psittacoidea, yet a few examinations affirmed the one of a kind situation of this gathering at the foundation of the parrot tree.
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