Fernbird Mātātā Returns to Wellington After About 70 Years, Found Naturally at East Harbour Park

A poor flyer, gone for seventy years, has found its own way back.
Fernbirds, absent from Wellington for about 70 years, were found at Lake Kōhangaterā during a baseline survey.
Mark

Why does a single sighting get this much attention?

Mimi

Because the bird has been gone from Wellington and the Wairarapa for around 70 years, apart from a few small west coast populations. And people were actually planning to bring it back when they found it already there.

Mark

So the survey was meant to prepare for a reintroduction?

Mimi

Yes. Lee Hunter of Taranaki Whānui said a baseline survey was done after they discussed returning mātātā, and it showed the birds had come back on their own.

Luke

Worth being careful, though. We're told they're there. We aren't told how many, or whether they're breeding.

Mark

Is that a real gap?

Luke

A big one. One sighting and a settled population are very different things. The reporting doesn't say which this is.

Mimi

Shane Cotter said it was a surprise partly because fernbirds are poor flyers, so reaching the Parangarehu Lakes isn't an easy trip.

Luke

And how they got there is unknown. Nothing in the source explains it.

Mark

What about the credit Jack Mace gives to conservation work?

Luke

That's his reading. He names council, iwi and volunteers, and wetland restoration and predator control. It's plausible, but it's an official's attribution, not something the survey proved.

Mimi

Still, the habitat clearly suits them. The council notes they need high-quality, diverse wetland, so their presence says something about the lakes.

  • A bird long gone from Wellington has turned up unannounced at Lake Kōhangaterā, catching conservationists off guard.
  • Fernbirds are poor flyers and rarely seen, so their return on their own defies easy expectation.
  • Council, iwi and volunteers credit steady wetland restoration and predator control for making the lakes hospitable again.
  • The birds are confirmed present, but how many there are, how they arrived and whether they breed remains unknown, and monitoring will decide whether they settle.

After roughly seventy years of quiet absence from the Wellington region, the mātātā, a small and secretive wetland bird, has reappeared at Lake Kōhangaterā in East Harbour Regional Park. Nobody carried it back; a baseline survey, undertaken in preparation for a planned reintroduction, revealed that the birds had found their own way home. The return is read by local conservationists as evidence that years of patient restoration of wetlands and control of introduced predators are beginning to make a place livable again for creatures that once belonged there. Whether this small presence becomes a lasting population is a question the lakes will answer slowly, over seasons still to come.

A bird most Wellingtonians have not thought about in seventy years has turned up at Lake Kōhangaterā, in East Harbour Regional Park. The mātātā, the fernbird, is secretive by nature, spending its days deep inside shrubby wetland vegetation, foraging for insects, and it has been classified by Greater Wellington Regional Council as regionally threatened: vulnerable. Its appearance is a welcome sign that the area's wetlands are healthy enough to support it.

The discovery came through a baseline survey, carried out as Taranaki Whānui had been discussing a possible reintroduction of the species. Surveyor Shane Cotter noted that fernbirds had been absent from Wellington and the Wairarapa for around seventy years, save a few small populations on the west coast. Finding them at the Parangarehu Lakes surprised him, since the birds are weak flyers and not an obvious candidate to recolonise on their own. Lee Hunter of Taranaki Whānui described the find as an encouraging sign of the value of the conservation work under way.

Greater Wellington's Jack Mace called the sighting fantastic, and credited the combined effort of council, iwi and volunteers in protecting biodiversity, restoring wetlands and knocking back introduced predators. The reporting confirms the birds are present and were not released, but leaves open how many there are, how they came, and whether they are breeding. Ongoing monitoring at the lakes will show whether this return grows into something lasting.

A bird that most people in the Wellington region have not had reason to look for in about seventy years has turned up at Lake Kōhangaterā, in East Harbour Regional Park. It is the mātātā, the fernbird, and its appearance there has surprised the people who know it best.

Greater Wellington Regional Council describes the species as secretive and hard to spot. Fernbirds spend most of their time inside the canopy of shrubs, living among dense wetland vegetation where they forage for insects and other small invertebrates. The council has classified the mātātā as 'regionally threatened: vulnerable'. Because the birds depend on high-quality, diverse wetland habitat, the council says their presence is an encouraging sign for the area's biodiversity.

The discovery came through a baseline survey. Bird surveyor Shane Cotter said it matters both for the species and for the park. By his account, fernbirds have been missing from the lower North Island, meaning Wellington and the Wairarapa, for around 70 years. The exception is a few small populations on Wellington's west coast.

Cotter said finding them at the Parangarehu Lakes was a surprise, in part because fernbirds are described as poor flyers. A bird that flies badly and has been absent from a region for generations is not an obvious candidate to reappear on its own.

The survey itself had a particular origin. Lee Hunter, speaking for Taranaki Whānui, said the group had recently been discussing the re-introduction and return of mātātā. To prepare, a baseline survey was carried out, and it showed the birds had already come back without any help. Hunter called it an encouraging sign of the value of the conservation work under way at the lakes.

Greater Wellington's director of delivery, Jack Mace, called it fantastic to see mātātā at Parangarehu Lakes. He said the birds are not common at all, so finding them there is a real sign that the efforts of council, iwi and volunteers are paying dividends. Those efforts, in his words, include protecting biodiversity, restoring wetlands and knocking back introduced predators.

The reporting establishes that the birds are there and that they were not released. It does not say how many were found, how they arrived, or whether they are breeding. Whether the mātātā settle and grow into an established population is the question that further monitoring at the lakes will have to answer.

We recently discussed the re-introduction and return of Mātātā, so a baseline survey was conducted, and we found that they had returned on their own.
— Lee Hunter, Taranaki Whānui
The discovery shows the efforts of council, iwi and volunteers to restore wetlands and control predators are paying dividends.
— Jack Mace, Greater Wellington director of delivery (paraphrased)
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