About Kererū

Kererū (kūkupa, kūkū, New Zealand Pigeon, Hemiphaga novaeseelandiae), are large arboreal pigeons native to New Zealand. They can be found on the North, South and Stewart Islands and many forested offshore islands. The Parea chathamensis is found on the Chatham Islands.

Nesting and breeding

Kererū raise one chick at a time in a well-hidden nest of twigs. Both parents incubate the egg, which hatches after about a month. Over the course of a good breeding season, they might raise three chicks.

The parents feed each chick a protein-rich “milk”, which they secrete from their crops, adding partially-digested fruit to their diet after a couple of weeks. Chicks leave the nest at 30-45 days old, but the parents continue feeding them for at least another two weeks.

Diet

Kererū eat the fruit, leaves, twigs, buds, and shoots of over a hundred native, and fifty exotic, shrubs and trees. Occasionally, they gorge so heavily on ripe fruit that they become very full (or “drunk”) and have been known to fall out of trees.

Kererū are very important to the survival of New Zealand forests because they’re the only birds left (all others are now extinct) big enough to swallow the large fruits of native trees such as taraire and karaka.

After dining on fruit, they fly to a favourite roost to digest their meal. When they eventually pass that meal, they leave behind a dropping containing a seed and its very own package of fertiliser. This helps seedlings establish in new areas, and keep forests rejuvenated.

This role of propagator makes kererū a ‘keystone species’ of lowland forests.

You can find a list of kererū-friendly plants for your garden here.

Kererū declines: Introduced mammalian pests

Kererū were once much more common throughout New Zealand. Until Māori arrived 1000 years ago, bringing Polynesian rats (kiore) and dogs with them, our native birds had never seen a mammalian predator. They were naive and trusting – many were flightless – and to this day, still have a strong smell that sharp-nosed introduced predators easily track.

Kiore began a relentless slaughter that turned to annihilation when Europeans arrived. They introduced stoats, weasels, ferrets, cats, Norway and ship rats, mice, possums and pigs that found our native birds tragically easy prey.

To make things worse, vast tracts of native forest fell to the axe and the match.