On the Case

Pest detection news.

Watch for plague skinks - help prevent their spread

20 December 2018

Plague skinks have been discovered in Marlborough in the South Island. Although they have been spreading in the North Island for some time, this is the first time they've been observed in the South Island.

It is likely that plague skinks are being spread to new locations by accident, when they are inadvertantly transported in goods - especially potted plants.

So, be alert to signs of the species. If you live in an area where plague skinks are known to occur, including the latest area in Marlborough, or travelling through these areas, take care to check that you are not being a carrier.

What to look out for?

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Mystery tracks at nesting site

26 November 2018

A confusing series of animal tracks in sand near nesting sites of the vulnerable northern New Zealand dotterel recently had local wardens puzzled.

One of the wardens, Lisa Kierny, send photographs to Pest Detective of the mystery tracks found at Simpsons Beach on the Coromandel Peninsula. Tracks in sand can be difficult to identify because footprints can be blurred due to the sand settling and wind smoothing off edges. However, there was enough information in the photos for three different pest animals to be identified.

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Tell-tale footprints leads to capture

15 October 2018

The discovery of weasel footprints on 1st October put staff on full alert at Zealandia, Wellington’s urban wildlife sanctuary.

If a weasel had somehow got into the sanctuary, it was potential bad news for the vulnerable wildlife living there. Zealandia is surrounded by an 8.6-kilometre predator fence, designed to exclude predators like weasels but, nevertheless, constant surveillance is needed in case of incursions.

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It’s Conservation Week – a good time for backyard pest detection

17 September 2018

It was backyard detective work that spurred Mimi Olds-Spence, of Auckland, to get active in conservation some months ago.

She noticed that her beloved silk tree was being decimated. Something was eating the flowers and leaves, strewing the ground with fragments and breaking branches – all typical signs of possum browse. Droppings confirmed the culprit. There were other signs too.

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It's all in a day's walk

1 September 2018

We've added several photos from Matt Downer, who has applied his pest detective skills while out walking in the reserves behind Nelson.

On one occasion, when up in Grampian Reserve behind the city, he noticed the possum pellets pictured here. They were easily distinguished by their size, characteristic 'jellybean' shape and greenish tinge.

Just 10 metres away was another very different single larger dropping.

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It's Biosecurity Week!

23 July 2018

‘Shining a Light on Innovation’ is this year’s theme for the New Zealand Biosecurity Institute’s annual awareness week.

Pest animal detection is one aspect of biosecurity that has seen innovation in recent years. After all, it’s important to know what species are present, where they are and how numerous they are to understand the extent of threat and the success (or not) of pest control.

Our Pest Detective website is one such innovation. It filled a former gap in information and was designed as a search and information tool to help people recognise, through observation, the typical signs pest animals leave in the field and understand each species' typical behaviour.

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