Kiwi bono?

Tuesday 17 February 2026 – Apart from the Haka and Brendan McCullum, what New Zealand is best known for is the Kiwi, in all the various connotations of that word – an adjective to describe its inhabitants or its Rugby League team, a brand name for shoe polish (actually developed by an Aussie, but his wife was a New Zealander), a fruit… or the species of the country’s, possibly the world’s, oddest bird. Today we went to the National Kiwi Hatchery to learn more.

I had actually seen Kiwis before, on my last trip to New Zealand, in 1988. I was culturally backward in 1988, but even in those days I knew that Kiwis came from New Zealand, and somehow or other (there was no Google in those days) I found a place then where one could view the birds, in captivity of course, as they’re very difficult to see in the wild, being (a) shy and (b) nocturnal. The place operated 12 hours out of sync with actual time, so that daytime visitors entered a darkened environment in order to see the birds active. I have a clear memory of seeing at least one Kiwi, and possibly even photographing it, but that was nearly forty years ago, my memory has a habit of inventing things and I have no way of finding out if this is true until I get home and can look at the photos from that time. If I can remember where I put them.

So…today, then.

Jane had cleverly averted a major sulk on my part by ensuring I knew in advance that any sort of photography of the birds was not permitted. Kiwis are easily upset by unexpected light and noise, and I (grumpily) accepted that the centre had to be careful because most people (a) use phones, which emit a lot of light and (b) almost certainly have no idea about whether its flash will fire or not, therefore can’t be trusted. Armed with that foreknowledge, off we went.

The first challenge was finding the place. We had an address, but that turned out to be some kind of Māori-themed tourist trap. In the end, Google Maps gave us the place to find, the intriguingly-named Agrodome, which is not a Mad Max style cage fight but is actually a place themed around a family day out on the farm.

The Aardman theme continues once one gets there.

It’s actually quite the operation, running farm tours around what is quite a large area.

They have a variety of livestock, including sheep, goats and cattle. Sheep are their main focus; the gift shop and cafe is housed in the Woollen Mill, where they have an old carding machine

alongside the sales of Pure New Zealand wool in the shop.

They have a pig,

a Kunekune pig (“Kunekune” means “fat and round” in Māori). They also have an ostrich

which has many similarities to a Kiwi – flightless, grumpy and with very strong legs.

This similarity was pointed out on the guided tour that the National Hatchery operates. One is picked up at the Agrodome and taken by minibus to the hatchery centre.

The lass who drove our van was also our guide for our trip

and she did a very good job of explaining about the bird, its environment, its challenges and the role of the hatchery. She also emphasised that photography of the birds would not be permitted before leading us through to where they keep a few (currently three) kiwis in the same inverted time that I saw thirty eight years ago, switching day and night.  As it turns out, it was so dark in there that any sensible photography was simply not feasible anyway, so I didn’t miss out on a photo opportunity.

So: the Kiwi, then. It’s a weird, weird creature.

  • Its feathers are more like hair
  • It has whiskers like a cat
  • In many ways it’s more like a mammal. It has two ovaries; a low body temperature of about 38°C; and marrow in its bones (flighted birds’ bones are honeycombed and hollow to save weight)
  • It is very heavy, which is not a problem because it is flightless. Our guide passed around a couple of fluffy model Kiwis made to weigh the same as a chick and an adult and it was a real surprise: the adult female weighs around 3kg

It is thought to be the world’s most ancient bird, having evolved some 30 million years ago. It developed, of course, with no mammalian predators at all (only avian ones, like hawks or crows), so introduced animals such as ferrets and stoats have wrought much damage to the Kiwi population, and predate Kiwi chicks (though an adult will give a stoat a good kicking, apparently). Even hedgehogs are their enemies, since a hedgehog is not above making a nice proteinaceous meal out of a Kiwi egg.

Ah, yes. The eggs. They are enormous, compared with the bird in which they develop.

Somehow or other, a female Kiwi can develop an egg like that in about a week. An X-ray gives an extraordinary picture.

One wonders how uncomfortable it is for the poor bird to deliver it, but somehow she does, and she delivers it into the care of the male (with whom she is likely bonded monogamously). Then, because she hasn’t had anything to eat for a week because of the size of the egg, she goes off to find food, developing the while a second egg (from her other ovary), which she then also delivers into the male’s care. That is then her job done; she has no further interest in eggs or chicks at all.  The bloke Kiwi has to incubate these eggs for 80 days before they hatch. When they do, the chicks are basically fully-formed Kiwis who need no teaching about how to feed themselves, which is just as well, since the male makes no effort to teach them anything.

There are actually five types of Kiwi; the North Island has mainly Brown Kiwis, about 25,000 of them. The other types are: Rowi Kiwi, about the same size as a Brown Kiwi, but a greyer colour, and critically endangered with around 500 birds at the moment; Great Spotted Kiwi, the largest and toughest, spotted only on the South Island; Little Spotted Kiwi, which is, erm, small, and exists almost entirely in remote island colonies; and Tokoeka Kiwi, the Southern Brown Kiwi, which we might get to see later on this trip as it is not entirely nocturnal.

Unsurprisingly there were some stuffed kiwis for us to look at.  A male

The red tag is to allow tracking. If it’s not moving, it’s incubating an egg, which can be brought to the hatchery

and a female

To be absolutely certain in distinguishing one sex from the other it is necessary to analyse their DNA, but typically males are smaller and skinnier, and females larger and rounder. One can see their whiskers

and (if one looks very carefully) their nostrils, which are at the end of their bills, making them officially the birds with the shortest beaks in the world. It is possible to make a coat out of their feathers

and this would be for extremely high-ranking Māori. It takes a lot of birds to make a coat like that, and, these days, the species is under threat.  The National Hatchery exists to try to increase the chances of survival of Kiwi eggs. There are about 68,000 Kiwi left in all of New Zealand and the nation is losing 2% of its unmanaged Kiwi every year. The Brown Kiwi population is steadily declining by about 1-2% a year. Without ongoing support, experts estimate it will be extinct in the wild within two generations: only 50% of Kiwi eggs in the wild hatch; of those that do, only 5% of the resulting chicks survive to adulthood. The centre has overseen the successful hatching of nearly 3,000 eggs since it came into operation some 20 years ago.

The final part of our tour was to see the support the centre gives for hatching chicks. Eggs are located using a variety of tactics, such as tagging the males – if they’re stationary, they’re likely incubating – to locate eggs and bring them to the hatchery. They are carefully incubated, the chicks are microchipped, checked for health, measured and fed to bring them to the point where they are heavy and strong enough to withstand a stoat and so can be released back into the wild; they are then set free in the same region that the egg was found. This is not traumatic for either the male or the chick, since the former doesn’t care for the latter and the latter is pretty much ready for the wild and hasn’t imprinted at all on people during its time in the hatchery.  It’s a funny old business, but deeply interesting to learn about what they do and to find out how extraordinarily weird these creatures are.

That was our scheduled activity for the day. Rather than relaxing for the rest of it, Jane (of course) found Something Interesting To Do in the evening. That will be the subject of the next post. Heads-up – there will be a certain amount of photographic nerdery in it as well as some pretty pictures.

4 thoughts on “Kiwi bono?

  1. Katharine C Burridge

    The Kiwi has developed an excellent way to give birth that a working woman would appreciate. Rog would have been our house kiwi!

    Their whiskers are so strange…and hair instead of feathers. It would be a shame though that after all these years, kiwis may face extinction on our or my kids’ watch.

    Reply

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