North Island kaka
| New Zealand kaka | |
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| A pair of North Island kaka (N. m. septentrionalis) at the Auckland Zoo, New Zealand | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Psittaciformes |
| Family: | Nestoridae |
| Genus: | Nestor |
| Species: | N. meridionalis |
| Binomial name | |
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Nestor meridionalis (Gmelin, 1788) |
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| Range in green | |
The New Zealand kaka (Maori: kākā), (Nestor meridionalis) is a large species of parrot of the family Nestoridae found in native forests of New Zealand. Two subspecies are recognised. It is endangered and has disappeared from much of its former range.
The New Zealand kaka was described by German naturalist Johann Friedrich Gmelin in 1788. There are two subspecies, the North Island kaka, Nestor meridionalis septentrionalis, and the South Island kaka, N. m. meridionalis. The Māori language name kākā means "parrot", possibly related to kā, 'to screech'.
The genus Nestor contains four species: the New Zealand kaka (Nestor meridionalis), the kea (N. notabilis), the extinct Norfolk kaka (N. productus), and the extinct Chatham kaka (N. sp.). All four are thought to stem from a "proto-kaka", dwelling in the forests of New Zealand five million years ago. Their closest relative is the kakapo (Strigops habroptila). Together, they form the parrot family Strigopidae, an ancient group that split off from all other Psittacidae before their radiation.
The New Zealand kaka is a medium-sized parrot, measuring 45 cm (18 in) in length and weighing from 390 to 560 g (14 to 20 oz), with an average of 452 g (0.996 lb). It is closely related to the kea, but has darker plumage and is more arboreal. The forehead and crown are greyish white and the nape is greyish brown. The neck and abdomen are more reddish, while the wings are more brownish. Both sub-species have a strongly patterned brown/green/grey plumage with orange and scarlet flashes under the wings; color variants which show red to yellow coloration especially on the breast are sometimes found.
This group of parrots is unusual, retaining more primitive features lost in most other parrots, because it split off from the rest around 100 million years ago.
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Wikipedia