Kiwi Coast

September 29, 2023

Fetu Mama Proves Kiwi Corridor is Working!

Fetu Mama – a monitored kiwi in eastern Whangarei – has just proved that our Kiwi Corridor is working!

One of the key goals of Kiwi Coast is to restore the natural gene-flow of wild Northland kiwi by creating safe dispersal corridors between high density kiwi populations.

In essence, this involves linking hapū and community-led projects together to form vast landscape scale pest control networks. The first such corridor is forming in eastern Whangarei with the Tutukaka and Whangarei high density kiwi populations bridged by the Kiwi Link project.
A handful of radio-transmitter wearing wild kiwi are monitored to track progress and one such kiwi, Fetu Mama,  decided to give the corridor a test with great results!
Article by kiwi tracker, Todd Hamilton
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Fetu Mama was transferred as a chick to the Matakohe Limestone Island kiwi creche in the Whangarei Harbour.  She was found again by Lesley and her certified Kiwi Conservation Dog,  Yagi, on January 26, 2023. A health check showed she had reached 1800g in weight and was ready to graduate from the island.

Fetu Mama on her release day with Todd Hamilton, March 2023

Her bill was also measured and found to be 105.3mm. At this stage we were not sure if she was a young female or older male. Adult male kiwi have shorter bills than females and is the main way that kiwi are determined to be male or female. In the meantime, we put a small radio transmitter on her leg to keep in touch with her in preparation for her eventual  transfer to Parua Bay.

Her big day arrived on March 3, 2023 and she was transferred back to the mainland where the Northland Pacific Island Charitable Trust (Fale Pasifika) were given the honour of naming her by the Friends of Matakohe Limestone Island and Te Parawhau. That evening, she went on to star at the Backyard Kiwi release event at Parua Bay on with three of her fellow creche graduates.

As part of the release, she was remeasured and found to be 1800g in weight. Her bill had grown to 109.3mm, letting us know that she was  still growing.
Shaun Robinson of Backyard Kiwi had the honour of releasing her at the Martins’ Owhiwa Road block, within the Kiwi Link project area. As a dog free, predator trapped property that has also had a controlled ground based 1080 pulse, this is a very safe place to release kiwi.

Fetu Mama with Kerry Martin, Aug 2023. Photo Todd Hamilton

Fetu Mama then spent the next five months exploring the Martins’ pine block at the start of Owhiwa Road – including up by the road itself then eastwards to  a valley of pampas and young pines on the Taraunui Road side where we caught up with her in August. She was close to the female kiwi ‘Maia’ and the young male ‘Humphries’ who also have radio transmitters on.

She was in good condition and had grown to 2200g and had a bill of 122.7mm confirming that she was definitely a she!
We lost contact with her after that. Kerry Martin and I did big searches listening out for her radio signal both near and wide.  We got a couple of weak signals that seemed to be coming from the bush towards Taraunui Road but couldn’t get a good fix.  When I was way over at Campbell Road I picked up a weak signal in a north-west direction.  A day later after hunting the signal down towards Tarauni Road then the end of Owhiwa Road and then progressively NW until I found her beside Mt Tiger road in the NE corner of the Maungatika Scenic Reserve.

Tracking Fetu Mama!

By road, this is an 8km journey from her last known spot but a much bigger journey if you take all the hills, valleys, creeks and ridges into account.
The theory is that she stayed near her release area for 5 months because there were other kiwi nearby calling – she mustn’t have found any to her liking to pair up with as she reaches adulthood and has struck out in search of a mate. If she finds a boy calling and sets up home they will be producing kiwi chicks for the next 50 years!
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Fetu Mama’s big adventure from Parua Bay to Mt Tiger is a huge success story. Her trail took her through farms, lifestyle blocks, native forest, scrub, roads and forestry. It is a testament to all the people along the way, that thanks to their pest control and dedicated dog ownership, she was safe to do so. The kiwi corridor worked!
If indeed she does pair up with one of the Mt Tiger wild male kiwi, then the goal of restoring the gene flow of Northland brown kiwi has just taken a huge leap!
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