Kiwi listening results

    Results from the May/June 2021 kiwi listening period.

    Three teams did kiwi listening in 2021: Kathryn and Al Pankhurst at Aroha Island, Graeme and Tyler Bocock in Blue Penguin Drive and we covered the Rangitane National site.

    In addition to human listening we did electronic listening on five properties.  Here's the summary of our 2021 results.

    kiwi listening

    Electronic listening
    listening deviceWe have electronic listening devices we put into the field each year,  they don't have the range of the human ear, but do pick up the closer calls. We programme to record from 6:00pm - midnight and leave them out for five nights.

    We then run the audio files through this free software from and it identifies potential kiwi calls. Pretty cool kit.

    Below is what the calls look like on the screen, male and female produce distinctly different graphic patterns.  Highest recorded average was at Aroha Island 5.7 calls per hour.

    male female log

    Here's a couple of audio files

    A rowdy male:


    A female:


    Would you like to do kiwi listening on your property?
    Get in touch This email address is being protected from spambots. You need JavaScript enabled to view it.. We've got some good training resources here and can come and listen with you for the first night to get you started. The data will be valuable to measure if kiwi numbers are increasing.

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