Good progress for Pest Free Onetahua

Return of the Kuaka | Bar-tailed Godwits

Pest Free Onetahua is a unique conservation project spanning 12,000ha – from the tip of Onetahua Farewell Spit, including Pākawau Bush in Kahurangi National Park and south to Whanganui Inlet. It’s a partnership with Manawhenua ki Mohua and aims to remove pests and restore the habitat of Onetahua Farewell Spit so native birds, plants and other wildlife can thrive. 

Summer sees the welcome arrival of our much loved kuaka godwits to Mohua Golden Bay. These migratory birds made the incredible journey from their breeding nests in Alaska to make Onetahua’s rich tidal flats home for a Kiwi summer. It also a busy time for the Pest Free Onetahua team in our detailed planning, research and partnership development. 

We work partnership with local iwi, and a recent highlight for the team was a visit to Onetahua with Manawhenua ki Mohua. We journeyed together with Farewell Spit Eco Tours, and spent the day getting to know whānau, sharing stories and discovering Onetahua’s special cultural and ecological sites. 

Tracking Tunnels in Ngāio Grove
Project Lead Brian Alder shows members of Manawhenua ki Mohua how pest tracking tunnels work.

The project team is currently working on the pest removal plan and carrying out detailed monitoring of specific areas. This information will be used to develop the best ways to eradicate rats, mustelids, possums and feral pigs from Onetahua. 

Looking out over Onetahua
Looking out over Onetahua

We’re also working towards a signed community agreement with The Department of Conservation (DOC). Onetahua is designated as one of Aotearoa’s few Nature Reserves, and this high natural value means specific consents and permissions are needed from DOC to carry out the detailed pest removal plan. 

PFO’s Aaron McClatchy stands beside the helicopter used in the recent feral pig cull
Field Manager Aaron McClatchy stands beside the helicopter used in the recent feral pig cull.

A recent win is the fantastic progress we’ve made to remove feral pigs. Two aerial culls using specialist helicopter operators and high-tech thermal imaging successfully reduced the population to single figures. A follow-up ground operation is underway, with the goal of eliminating feral pigs completely by early next year. This skilled mahi is a heartening step towards the shared vision of returning nature back to Onetahua.

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