Description
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 (1.00 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 .
The calls include a harsh ka-aa and a whistling u-wiia.
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