Experts are battling to save the remaining 68,000 kiwis in a country once home to millions

Below a mottled sky, a lone sea craft cuts across the water towards Kapiti Island. It’s been forsaken by people and gifted to the rare and vulnerable birds of New Zealand to forage undisturbed. Kiwi stepping carefully up the beach at midnight. Kokako waking no one with their shrill calls. And hihi flitting freely through the dense native bush. With no predators allowed, the birds are confident and thriving.

“New Zealanders are a shy and reclusive bunch, the kiwi is a bird we identify with,” says Paul O’Shea, an administrator for Kiwis for Kiwi, a conservation group set up to save the bird from extinction.

“It’s as vital to protect the kiwi in New Zealand as it is to protect the orangutan in Borneo, the sumatran tiger in Indonesia, and the panda in China. Losing these species from the planet might not affect your day-to-day life, but it is a loss to the human experience.”

Quick guide What is the Upside? Show Hide Ever wondered why you feel so gloomy about the world - even at a time when humanity has never been this healthy and prosperous? Could it be because news is almost always grim, focusing on confrontation, disaster, antagonism and blame? This series is an antidote, an attempt to show that there is plenty of hope, as our journalists scour the planet looking for pioneers, trailblazers, best practice, unsung heroes, ideas that work, ideas that might and innovations whose time might have come. Readers can recommend other projects, people and progress that we should report on by contacting us at theupside@theguardian.com

Sign up here for weekly email updates from this series

There are 68,000 kiwi left in the country, and they are declining at the rate of 2% per year . A century ago, there were millions. Outside the predator-free zones, kiwi chicks and adults are killed and eaten by dogs and cats, attacked by possums, stoats and rats, and hit by cars at night.

These ancient, flightless and nocturnal animals are a wonder to conservationists the world over. They are descended from a “proto-kiwi” that lived about 50 million years ago, they hatch eggs so large they take days to exit their bodies, and are related to the extinct moa, the tetchy cassowary and the emu in Australia (known as the ratite family).

On Kapiti, just 40 minutes by car and ferry from downtown Wellington, Emma Neill, state conservation worker, wanders awestruck through the bush. The birdsong is cacophonous and musical, the way mainland New Zealand used to sound.

Predator-free islands and sanctuaries are the highest conservation ranking for protected land in New Zealand, Neill explains. They are patrolled by rangers who live and work alone on the island, poised to tackle any threats: stoats which manage to “raft” over (on driftwood or debris after a storm), rats that stow away on boats, or Argentinian ants in picnic baskets that breach the natural moat, and can swarm on chicks in the nest.

If an invader is detected on the island, they are tracked by trained dogs, trapped and then baited using the controversial 1080 poison.

Facebook Twitter Pinterest A kiwi chick hatches at Auckland zoo. Photograph: Greg Bowker/AP

“Having done conservation projects for so many years, humans tend to react only when there’s a crisis, and the crisis point is often too late to save anything,” says the wildlife presenter Michaela Strachan, wearing a set of kiwi earrings cut from paua shells.

Strachan has teamed up with cider company Old Mout to help save the kiwi, a project she was drawn to because of the bird’s unusual charm.

“But this reaction seems to be happening before we’ve reached a crisis point, so I think it will make a difference. There is something about them that is just so full of character. I think because they’re flightless and vulnerable, human beings warm to things that are vulnerable.”

In 2016, the government committed to making New Zealand pest-free by 2050. Every rat, stoat and possum is to be wiped out.

Sceptics abound: Strachan calls the goal “unbelievable”, O’Shea from Kiwis for Kiwi says it’s “ambitious”, while Neill hopes she’s still alive to see the dream come true.

Facebook Twitter Pinterest Michaela Strachan discovers a newly hatched kiwi egg. Photograph: Old Mout Cider

This month, the new Labour-coalition government announced the most significant funding increase for the Department of Conservation in 10 years, with NZ$80m (£41.9m) flagged for pest-eradication efforts.

Brent Beavan, programme director for Predator Free 2050, says the biggest hurdle to saving the kiwi is domestic cats and dogs. But that’s a touchy subject in New Zealand, which has one of the highest rates of pet ownership in the Organisation for Economic Co-operation and Development.

To achieve the 2050 goal, a range of new technologies will have to be deployed in addition to pest-trapping and baiting, says Beaven. Drones, bio-chemical agents and genetic modifiers are all being considered.

“It feels a bit like Everest at the moment, but I think we can have a really good whack at it. Momentum and enthusiasm is really building,” says Neill. “New Zealanders have grasped it, and have started to act in their everyday lives.”

New Zealand Bird of the Year leaderboard: check the pecking order Read more

Across the country, volunteer groups that set and check pest traps in conservation areas are growing in number, and traps are increasingly appeating in backyards. In Northland, people offer to take their dogs to kiwi aversion training: an electric shock is administered to dissuade them from stalking kiwi. More people are locking their cats indoors at night.

Neill reckons the Maori worldview is becoming part of the New Zealand identity: we aren’t here to dominate mother nature, we’re here to protect it.

“We have something special here in New Zealand, we need to be careful to protect what we have,” she says. “We don’t just want our kids to have to look at our native birds on a chart in a school classroom – of what New Zealand once had.”

This article is part of a series on possible solutions to some of the world’s most stubborn problems. What else should we cover? Email us at theupside@theguardian.com