August Update – Biosecurity Awarded to NRC
Firstly notice of the upcoming WHLF meeting on Thursday October 24 at McLeod Bay Hall 7.30pm – all welcome.
Secondly congratulations to Don McKenzie and his team at the NRC for winning the Peter Nelson Biosecurity Award. This is a much sought after national award and it is great to see one of the WHLF’s key partners (and key funders) recognised for their success.
See details at:
http://www.nrc.govt.nz/News/Council-wins-coveted-Peter-Nelson-biosecurity-award/
“We see this very much as a trophy not just for us as a council, but also the many Northlanders from all walks of life who have worked closely with us over the past decade in a huge range of pest control initiatives both on land and in the water,” Don says.
Kiwi Predator Control Programme:
I’m still struggling to get enough rabbits for bait – if you have any can I have them please. I have started added in the extra traps funded by the Kiwi Coast – 1 has already caught a stoat. Some clever bugger managed to run over a big male stoat outside the golf club last week –well done! Can’t put this guy on our tally but every dead stoat helps!
Traps for August – 2 stoats, 2 weasels, 3 cats, 48 rats, 11 possums and 2 hedge hogs.
Tally for season to date 37 stoats, 15 weasels, 17 cats, 369 rats, 115 possums and 47 hogs.
Kiwi monitoring:
The nesting season is well underway with our 6 usual nesters unfortunately 2 of those nests (Dallas and Whitu) have failed for unknown reasons. There is still plenty of time for these guys to try again.
What your monitored kiwi are up to:
Darwin – He has just started nesting at Lamb road -5 hours nightly activity- nest will reach 65 days approx 27 October
Whitu – Usual area Reotahi, Nest failed after 45 days.
Dallas – At Hills’ by WH school, Nest failed after 36 days.
Lambert – Usual area Taurikura Ridge – nesting – 3 hours activity – nest will be 65 days on 15 September approx.
Waka – Usual area Mckenzie Bay – nesting – 3.5 hours activity– 65 days on 4 September approx.
Charlotte – Usual area of McKenzie Bay. I caught up with her for her annual transmitter change, she was a healthy 2600g and her bill has stopped growing showing she is now a fully grown adult (photo attached).
JR – South Taurikura Ridge above Urquarts Bay – Nesting – 3 hours activity –nest will be 65 days on 1 October..
Charlie – At McNamnaras’ at Craig Road – nightly activity is still high – 11 hours.
Kiwiana – At Blicks’ at the southern end of Mt Manaia. High activity of 12 hours as expected for a 2 year old.
Webb – Has dropped off the radar!!! I have covered a wide area looking for her but can’t find her radio signal.
Clover – Still high up on eastern Manaia -11.5 hours activity. Clover is in a tricky place to monitor and well away from any dogs so I plan to remove his transmitter.
Kiwi Call count monitoring for 2013
Every year we do a “kiwi call count” as a way of monitoring the kiwi population at the Whangarei Heads. During 3 weeks in June trained listeners sat at 22 designated listen sites and counted the kiwi calls over a 2 hour period on 4 separate nights – not as easy to do as it sounds! A BIG THANKS to those patient folks who braved the cold and strained their ears.
This season’s data has all come in now and the news is good. We work out the average number of kiwi calls per hour per site. Overall our call count is up from 5.9 in 2012 to 6.8 calls per site per hour. We also identify how many individual kiwi there are at each site by recording the location of each calling kiwi (using a compass bearing and estimated distance from the listening site) – remember that kiwi are territorial and tend to call from roughly the same area each time. The total number of individual kiwi identified has increased by over 10% this season from 183 to 206, which is heartening. Remember we only listened into 30-40% of our kiwi habitat so actually numbers of kiwi will be considerably more – well over 400 now and probably close to 500. Pretty good considering we were down to only an estimated 80 kiwi in total at the Heads back in 2001!!
The increasing call count is due to a combination of things:
Improved kiwi chick survival thanks to our ongoing stoat trapping network (without stoat control 95% of chicks are killed).
The release of new kiwi into the area each year from our BNZONE programme also adds to the population.
The significant improvement in dog control by local pet owners. Our community is to be congratulated on this crucial part of kiwi recovery as dogs are the biggest threat to adult kiwi.
Click on this link to view tables – one shows the trends in call counts from 2001 to 2013, the other shows the details or call counts at each site for 2013.
Keep up the good work Whangarei Heads!
WHLF 2013 call counts table(1).xls
WHLF kiwi call count summary 2001 to 2013