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Thanks to an active intervention program, at Whangarei Heads we really do have kiwi in our backyard.

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T.T. the Wanderer

March 17th, 2010

TT was a male kiwi that was in the first batch of four kiwi released in the area by the Whangarei Heads Landcare Forum to supplement the local population here.

TT had been previously transferred to the Limestone Island kiwi crèche by a DOC Ranger. In July 2004 he was again transferred, this time to the Whangarei Heads and released on the Odys’ farm at the northern end of Mt Manaia.

He was 1,650 grams in size and had a radio transmitter fitted to his leg so we could track his movements and survival.

TT spent a month or so checking out the northern end of Mt Manaia before disappearing off our radar.

Todd (our local kiwi tracker extraordinaire) tried using the radio aerial and receiver to follow TT’s transmitter.

Todd getting maximum radio reception

We looked all over and around Manaia – nothing.

Luckily Pete Graham of DOC was going up in a search plane using radio tracking to look for DOC transmittered  kiwi lost on Bream Head- he tuned into TT’s frequency and found him all the way over at Harambee Road (Northern Kauri Mt) 6 km away form his last reading!

TT then settled down in the Harambee road area spending time in weeds on the Taiharuru Road verge, in pampas at a quarry for a while, in rank kikuya grass and rushes in paddocks. In fact he went every where except the native bush!

Tracking TT (and other released kiwi) taught us WHLF folks a lot about our kiwi.   TT showed us that not only do kiwi cover quite big distances at times, but also that they can live in all sorts of habitat.  Kiwi’s are quite happy in pampas and gorse, pine plantations and on farm land.

So you can expect to find kiwi anywhere in the Whangarei Heads area – keep an eye (and an ear out). Let us know if you see kiwi in your backyard.


Jackie — little chick to big “chick”!

March 17th, 2010

After we (the Whangarei Heads Landcare Forum) had been trapping stoats at the Whangarei Heads for a couple of years we radio tracked some kiwi chicks to see if they were surviving or not .  Without trapping, scientific research had shown that over 90% of kiwi chicks were killed by stoats.  If the chicks were surviving to a weight of 1,000 grams then it would be a good indication that our predator trapping programme was working. Once 1,000 grams in size a kiwi can fight off most stoats.

In October 2004 “Jackie” hatched in “Oscar’s” nest on the McLeod Bay side of the Nook peninsula.  Using a radio receiver we were able to track Jackie’s radio transmitter on her leg and find her for regular “Plunket”checks.

 Here’s a sample of Jackie’s “Plunket” checks until she reached the magical 1,000 grams:

Date Weight Bill length
Oct 2004 262g 47.8mm
Nov 2004 495g 55.3mm
Dec 2004 510g 58.5mm
Jan 2005 645g 63.6mm
Feb 2005 780g 67.3mm
Mar 2005 830g 71.0mm
Apr 2005 940g 73.1mm
May 2005 920g 76.6mm
June 2005 1050g 81.9mm

It is worth noting that none of the seven young kiwi chicks we monitored got “stoated” – so that is good indication for our trapping programme.

As for Jackie, she kept on growing and also started wandering all over the Nook.

Date Weight Bill length
August 2005 1140g 90.1mm
November 2005 1400g 95.2mm
February 2006 1505g 104.4mm
December 2006 1960g 123.5mm
May 2007 2100g 128.8mm
December 2007 2260g 133.6mm
December 2008 2220g 135.7mm
June 2009 2450g – as she gets older Jackie will continue to get heavier. Some female kiwi weigh close to 4 kg! 135.7mm – once the bill stops growing it is an indication that the kiwi has reached maturity.

So after 5 years our girl Jackie had grown up. Kiwi hold the distinction of being the world’s slowest growing bird – but on the up side they are usually very long lived once mature – over 50 years on average if dogs are controlled in the area.

Jackie has now settled down in the Nook at Tahunatapu Road and in 2009 Todd found her in a burrow with a mate at Philip and Jeanette Kings’ property.  Her mate was duly named  “Spratt” – as in Jack Spratt.

Jackie and Spratt have had two nests over the 2009/2010 nesting season. Unfortunately, like a lot of first time breeders those eggs have failed but the couple are still practicing and can look forward to 50 years together to added to the healthy Nook kiwi population.

WHANGAREI HEADS LANDCARE FORUM