Updated at 9:14 pm on 5 March 2012
The Kakapo Recovery team is considering removing a male bird from its breeding programme after the deaths of several young kakapo.
A three-year-old kakapo named Rooster died last week, the fifth fatality since September last year.
Of the six young kakapo to die recently, four were fathered by a bird named Basil on Anchor Island in Fiordland.
Kakapo Recovery programme manager Deidre Vercoe Scott says the team is investigating the cause of the deaths, including whether there is a link with Basil's genetics.
There is a very low variation in the critically endangered species' gene pool.
There are now just 126 kakapo in the world, down from 131 in June last year.
The main kakapo population is on Whenua Hou/Codfish Island, off Stewart Island.
Copyright © 2012, Radio New Zealand
Audio is categorised based on the frequency of the programme it was heard in. Click on the headings below to access the programmes. For the most recently published audio, go to the latest audio page.
Streams are in Windows Media format. Mac and Linux users may need to install additional software. Get help with audio
A selection of music interviews, reviews, videos, concerts, sessions, and performances.
Downloads and podcasts are available for selected programmes. Our podcast page has a complete list of feeds.
Help on using online audio: formats, software, podcasts, downloading, and troubleshooting.