New Zealand kaka
Kingdom
Phylum
Class
Family
Genus
SPECIES
Nestor meridionalis

The New Zealand kākā (Nestor meridionalis ) is a large species of parrot of the family Nestoridae found in New Zealand's native forests. The species is often known by the abbreviated name kākā, although it shares this name with the recently extinct Norfolk kākā and Chatham kākā. Two subspecies of New Zealand kākā are recognised. It is endangered and has disappeared from much of its former range, though conservation efforts mean it is now increasingly common across Wellington.

Appearance

The New Zealand kākā 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; colour variants that show red to yellow colouration especially on the breast are sometimes found.

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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.

The calls include a harsh ka-aa and a whistling u-wiia.

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Distribution

Geography

Countries
Biogeographical realms

The New Zealand kākā lives in lowland and mid-altitude native forest. Its strongholds are currently the offshore reserves of Kapiti Island, Codfish Island and Little Barrier Island. It is breeding rapidly in the mainland island sanctuary at Zealandia with over 800 birds banded since their reintroduction in 2002. From their reintroduction in 2002, North Island kākā continue to re-colonise Wellington and a 2015 report showed a significant increase in their numbers over the preceding 12 years.

New Zealand kaka habitat map

Biome

New Zealand kaka habitat map
New Zealand kaka

Habits and Lifestyle

New Zealand kākā are mainly arboreal and occupy mid-to-high canopy. They are often seen flying across valleys or calling from the top of emergent trees. They are very gregarious and move in large flocks that often include kea, where they are present. They are highly active at dawn and dusk and can sometimes be heard calling loudly even at 3:00 am.

Lifestyle
Seasonal behavior
Bird's call

Diet and Nutrition

New Zealand kākā typically eat fruits, berries, seeds, flowers, buds, nectar, sap, plants and invertebrates. They use their strong beak to shred the cones of the kauri tree to obtain the seeds. It has a brush tongue with which it feeds on nectar, and it uses its strong beak to dig out the grubs of the huhu beetle and to remove bark to feed on sap.

Mating Habits

The New Zealand kākā nests in cavities in hollow trees. The entrance hole is often three to six metres above the ground, but can be as low as ground level on predator-free offshore islands. The nest floor is lined with small wood chips and powder. They lay eggs any time between September (late winter) and March (summer). Occasionally, in a good fruiting year, a pair can double clutch, often utilising the same nest hole for the second clutch and extending breeding into winter. They typically lay four eggs, though it can be up to eight, with two chicks fledging. Only the female incubates the eggs, for about 24 days, and cares for the nestlings, but she is regularly fed by the male throughout breeding. Both parents feed the chicks after they have fledged.

Population

Population number

New Zealand kākā are considered endangered, having greatly declined across their traditional range as a result of habitat loss, predation by introduced predators such as cats, rats, possums and stoats, and competition from wasps and bees for the honeydew excreted by scale insects. A closely related species, Nestor productus, the Norfolk kākā, became extinct in 1851 for similar reasons.New Zealand kākā are absolutely protected under New Zealand's Wildlife Act 1953. The species is also listed under Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) meaning international export/import (including parts and derivatives) is regulated.

References

1. New Zealand kaka Wikipedia article - https://en.wikipedia.org/wiki/New_Zealand_kaka
2. New Zealand kaka on The IUCN Red List site - https://www.iucnredlist.org/species/22684840/93049267
3. Xeno-canto bird call - https://xeno-canto.org/428663

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