Show Notes
Forty eight out of fifty kākāpō females on the southern islands have mated, nesting is well underway and the first AI has been carried out, all in episode 6 of the Kākāpō Files. It's nearly a full sweep on the southern kākāpō islands, with 48 out of 50 females having mated - a record number. All of the females on Anchor Island have nested, and on both Anchor and Whenua Hou the Kākāpō Recovery Team is bringing in eggs for hand rearing, in the hope that females will mate again. The Sperm Team has also begun work, collecting sperm from genetically desirable males to allow artificial insemination of some equally important females, giving the species a genetic helping hand. The kākāpō team is rushed off its feet, keeping up with the busy birds. It's a full house on Anchor Island, where all 21 females have mated - and nested. The egg tally there is a mighty 75, but so far only 19 of the eggs that have been checked have been found to be fertile. Some eggs are too young to determine whether they are fertile yet. The island rangers on Anchor Island are working to bring all the fertile eggs to the hut to be incubated, freeing females up for a second nesting attempt. On Whenua Hou/Codfish Island, 27 out of 29 females have mated so far. Hoki - the first kākāpō to be hand-reared, back in 1992 - has not mated yet, and neither has Mahli. Mahli is almost 5 years old, and very young, but her sister Tohu has just mated. The Whenua Hou rangers have so far brought 10 fertile eggs down to the hut, to be artificially incubated in the nursery Portacom next to the hut. Senior technical officer Daryl Eason and the Sperm Team have begun collecting sperm from males with desirable genetic traits. The sperm is used to artificially inseminate females, a job which can be undertaken about 3-7 days after a female has mated. Daryl says AI has several aims: the more times a female mates, the greater the likelihood that her eggs will be fertile. It is also an opportunity to pass on genes from the founder males which either haven't bred at all or have only produced a small number of chicks. So far, Daryl says they have collected a good sperm sample from Luke, a Stewart Island bird with no offspring. It has been used to artificially inseminate Jean, a Stewart Island female with only three offspring. Daryl reports that Gulliver, one of two males with desirable Fiordland genes, has just mated with two females on the same night, including Tohu. Update 28 January 2019 Hoki has mated, bringing the number of females who have mated to 49 out of 50. So far, 119 eggs have been laid. Of these, 36 are fertile, 64 are infertile and 19 have yet to have their fertility confirmed. Go to this episode on rnz.co.nz for more details
More from Kākāpō Files II
The biggest kākāpō season on record has come to an end, with a bumper number of chicks reaching the milestone of 150 days old. The 90 chicks have boosted the kākāpō population from 235 birds to 325, an increase of more than a third. The 2026 season saw 48 kākāpō mums produce living chicks, fathered by 32 dads. The ‘top dad’ was 10-year Tūterangi, breeding for the first time, who fathered 10 chicks with six females. Ten chicks were fathered with the help of artificial insemination. DOC’s Kākāpō Recovery Programme reports that not all of this year’s chicks will be named, and that they expect the next breeding season to be in two years’ time. Send any Kākāpō Files questions and comments to [email protected]. In this episode: 00:00 – Introduction 01:42 – Deidre Vercoe announces 90 chicks and population of 325 kākāpō 04:45 – Naming kākāpō 06:00 – Daryl Eason on the identity of the dads 10:27 – 10 chicks fathered through artificial insemination 15:59 – Andrew Digby on stepping back from intensive management 18:20 – next breeding season in 2028 24:43 – Deidre Vercoe on predator-free habitats 28:58 - Closing credits… Go to this episode on rnz.co.nz for more details
The oldest chick of the 2026 kākāpō breeding season, Tiwhiri-A1 has reached 150 days old and can be officially counted. This milestone increases the kākāpō population by one bird to 236, the first time it has risen in 4 years. The first chicks to reach independence are roosting away from their mums and feeding themselves, and two chicks have dropped their transmitters and are now “off-grid”. With the threat of deadly H5N1 bird flu looming, vet Lydia Uddstrom explains that about a quarter of the most genetically valuable kākāpō will be vaccinated against bird flu, especially on Whenua Hou, which has a large population of seabirds. Send any Kākāpō Files questions and comments to [email protected]. In this episode: 00:00 – Introduction 02:30 – Island news with ranger Louise Porter 13:45 – Highly pathogenic H5N1 bird flu 17:28 - Vet Lydia Uddstrom on bird flu vaccinations 26:10 - How do kākāpō contract aspergillosis 27:37 - Are any kākāpō on display 28:20 - Frozen sperm 29:17 - How kākāpō use space 37:06 - Are kākāpō cuddly 38:00 - Closing credits… Go to this episode on rnz.co.nz for more details
Six months after this record-breaking kākāpō breeding season began, all 91 living chicks have fledged and left the nest. The chicks remain with their kākāpō mums and are still being fed by them, as well as eating a range of plant material, and as cold wet midwinter weather sets in the chicks are learning to find dry roost sites. The Kākāpō Team’s Daryl Eason and Andrew Digby answer listener questions, including why did Kākāpō cam star Rakiura spend so much time in the nest digging, what can you learn from a piece of egg shell, and could old museum specimens be a source of lost kākāpō genes? Send any Kākāpō Files questions and comments to [email protected] In this episode: 02:06 – Island news with ranger Daniella Whitaker 06:21 – Update on Kākāpō Cam star Rakiura 11:43 – Sick kākāpō 15:19 - Are kākāpō smart? 18:19 - Previous nest cams 20:05 - Why did Rakiura dig so much in her nest? 24:00 - Do kākāpō compete with other species? 25:30 - Kākāpō on Coal Island and at Sanctuary Mountain Mangatautari 30:57 - Museum specimens and lost genes Learn more: Follow the Kākāpō Files podcast to keep up to date Listen to the Voice of the Kākāpō series for a recap of the 2019 breeding season. Also listen to the episodes covering the interim 2022 breeding season, and about how a few male kākāpō have fared in the North Island, in the fenced Sanctuary Mountain Maungatautari For more New Zealand science and nature find and follow the Our Changing World podcast, and subscribe to the show’s monthly newsletter Guests: Kākāpō ranger, Daniella Whitaker, Kākāpō Recovery Programme Kākāpō technical advisor, Daryl Eason, Kākāpō Recovery Programme Kākāpō science advisor, Andrew Digby References: Kākāpō Files is made in collaboration with the Department of Conservation’s Kākāpō Recovery Programme. Go to this episode on rnz.co.nz for more details
Half of the chicks from this record-breaking kākāpō breeding season have fledged and left their nests for good, but are still being fed by their mums. The tally of living chicks has dropped to 92 with the death of a chick from Te Kākahu/Chalky Island. Veterinary advisor Lydia Uddstrom reports that a 4-year-old female is being treated for cloacitis, a mysterious infection with no known cause that has infected a number of birds in the past few years. Kākāpō rangers give potted histories and breeding season updates for nine birds that are part of a symbolic adoption programme. Send any Kākāpō Files questions and comments to [email protected]. In this episode: 00:00 – Introduction 01:00 – Vet Lydia Uddstrom with island news 06:24 - Adult female Tōrua treated for cloacitis 11:20 - Adoption birds 13:22 - JEM breeding season update 15:57 - Marama breeding season update 18:14 - Waikawa breeding season update 21:28 - Nora breeding season update 24:24 - Bluster Murphy breeding season update 27:05 - Sinbad breeding season update 29:55 - Kuia breeding season update 32:48 - Rahotu breeding season update 35:05 - Rangi rediscovered 37:50 - Closing credits Learn more: Follow the Kākāpō Files podcast to keep up to date Listen to the Voice of the Kākāpō series for a recap of the 2019 breeding season Also listen to the episodes covering the interim 2022 breeding season, and about how a few male kākāpō have fared in the North Island, in the fenced Sanctuary Mountain Maungatautari For more New Zealand science and nature find and follow the Our Changing World podcast, and subscribe to the show’s monthly newsletter Guests: Kākāpō veterinary advisor, Lydia Uddstrom, Kākāpō Recovery Programme Kākāpō ranger, Jess Wagner, Kākāpō Recovery Programme Kākāpō ranger, Sarah Little Kākāpō ranger, Theo Thompson References:… Go to this episode on rnz.co.nz for more details
The tally of confirmed living kākāpō chicks goes down with two further deaths, but gets a welcome boost with the confirmation of a living chick in a previously inaccessible nest. This brings the number of living chicks to 93, ranging in weight from 770 grams to nearly 2.5 kilograms. On all three kākāpō breeding islands, the oldest kākāpō chicks are fledging and leaving their nests. They are still accompanied and fed by their mothers, but find their own shelter. Before chicks leave the nest for good, kākāpō rangers visit to insert microchips as a permanent identification, and to attach transmitters that enable the Kākāpō Team to locate the chicks and monitor their activity levels remotely. Send any Kākāpō Files questions and comments to [email protected]. In this episode: 00:00 – Introduction 02:34 – Big chick Huhū-A1 using a special ramp to leave the nest 05:23 – Ranger Petrus with the latest island news 06:44 - A chick is finally confirmed in Rimu’s cliff-top nest 10:09 - Two more of Waa’s chicks die so latest living chick tally is 93 11:46 - Update on Pearl-B3 and sick chicks 13:17 - Chick transmitters 19:55 - Tanē Davis on Ngāi Tahu’s relationship with kākāpō 27:35 - Vet Lydia Uddstrom and Vori’s story 32:34 - Closing credits… Go to this episode on rnz.co.nz for more details