Should New Zealanders kill their kittens to save their native birds?

Domestic cats are furry murderers, argues a New Zealand businessman who is spearheading a campaign to get his fellow Kiwis to give them up.

'Save a Kaka, kill your cat' is the message of New Zealand businessman Gareth Morgan, who has started a campaign to rid the ecologically isolated islands of murderous felines in attempt to stem the dwindling numbers of native birds.

For 80 million years, the archipelago has been separated by ocean from any other land. Apart from one mouse-sized animal which went extinct around 16 million years ago, there have never been any land mammals on the islands (although there remain two species of native bat, and plenty of whales, dolphins and seals). That left an ecological niche which was largely filled by birds, being some of the few animals which could reach the islands after the seas split them from the rest of Gondwanaland.

New Zealand has some of the most unique, and clueless, birds in the world. The Kakapo is a giant green parrot which eats grass and has sex with Stephen Fry's head. The Kiwi is the size of a chicken, and lays an egg so big that the female, for the last couple of days of her incubation, has no room for any food in her stomach and must fast. The Kokako is a semi-flightless bird which sings duets in breeding pairs for hours on end and occupies the same niche as a flying squirrel.

None of them were ever exposed to predatory land mammals until the Maori arrived in the 14th century, and so they have very few natural defences against them. The introduction of mice and rats was bad enough, but once cats appeared, it was nearly over. The Kakapo and Kiwi are now critically endangered species, each limited to a few islands which have been cleared of introduced predators — but there's hope for the Kokako, as well as the Kaka and Weka which are also under threat. And one thing which would help is New Zealanders giving up their cats.

Gareth Morgan has started a campaign, Cats to Go, which is pushing for that aim. He writes:

New Zealand is the last refuge of a huge range of bird species, we’re famous for our claim to be clean and green, and some of us have recognised the huge economic benefit, let alone the ecological dividend, from achieving a Predator Free New Zealand.

But the vision is flawed. Almost half of Kiwi households have a cat (or two) making New Zealanders the world’s biggest cat owners. Cats are incredibly effective hunters and are wiping out our native birds.

… Like the parent of a bully saying that their little Johnny would not behave like that, if you’re a cat owner reading this, you are probably thinking that the above statistics don’t apply to your cat. The fact is that your furry friend is actually a friendly neighbourhood serial killer.

He doesn't actually want people to kill their cats directly — though he emphasises that "that is an option" — instead proposing that people put bells on their cats to warn birds, keep them inside, get them neutered, and, above all, not replace them when they die.

Even if it works, there is a long way to go to make New Zealand safe for its native birds. Rats, mice and possums are all widespread and causing damage of their own. But a cat-free New Zealand might still be worth fighting for.

New Zealand's killer kittens. Photograph: Cats to Go

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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The strange death of boozy Britain: why are young people drinking less?

Ditching alcohol for work.

Whenever horrific tales of the drunken escapades of the youth are reported, one photo reliably gets wheeled out: "bench girl", a young woman lying passed out on a public bench above bottles of booze in Bristol. The image is in urgent need of updating: it is now a decade old. Britain has spent that time moving away from booze.

Individual alcohol consumption in Britain has declined sharply. In 2013, the average person over 15 consumed 9.4 litres of alcohol, 19 per cent less than 2004. As with drugs, the decline in use among the young is particularly notable: the proportion of young adults who are teetotal increased by 40 per cent between 2005 and 2013. But decreased drinking is not only apparent among the young fogeys: 80 per cent of adults are making some effort to drink less, according to a new study by consumer trends agency Future Foundation. No wonder that half of all nightclubs have closed in the last decade. Pubs are also closing down: there are 13 per cent fewer pubs in the UK than in 2002. 

People are too busy vying to get ahead at work to indulge in drinking. A combination of the recession, globalisation and technology has combined to make the work of work more competitive than ever: bad news for alcohol companies. “The cost-benefit analysis for people of going out and getting hammered starts to go out of favour,” says Will Seymour of Future Foundation.

Vincent Dignan is the founder of Magnific, a company that helps tech start-ups. He identifies ditching regular boozing as a turning point in his career. “I noticed a trend of other entrepreneurs drinking three, four or five times a week at different events, while their companies went nowhere,” he says. “I realised I couldn't be just another British guy getting pissed and being mildly hungover while trying to scale a website to a million visitors a month. I feel I have a very slight edge on everyone else. While they're sleeping in, I'm working.” Dignan now only drinks occasionally; he went three months without having a drop of alcohol earlier in the year.

But the decline in booze consumption isn’t only about people becoming more work-driven. There have never been more alternate ways to be entertained than resorting to the bottle. The rise of digital TV, BBC iPlayer and Netflix means most people means that most people have almost limitless choice about what to watch.

Some social lives have also partly migrated online. In many ways this is an unfortunate development, but one upshot has been to reduce alcohol intake. “You don’t need to drink to hang out online,” says Dr James Nicholls, the author of The Politics of Alcohol who now works for Alcohol Concern. 

The sheer cost of boozing also puts people off. Although minimum pricing on booze has not been introduced, a series of taxes have made alcohol more expensive, while a ban on below-cost selling was introduced last year. Across the 28 countries of the EU, only Ireland has higher alcohol and tobacco prices than the UK today; in 1998 prices in the UK were only the fourth most expensive in the EU.

Immigration has also contributed to weaning Britain off booze. The decrease in alcohol consumption “is linked partly to demographic trends: the fall is largest in areas with greater ethnic diversity,” Nicholls says. A third of adults in London, where 37 per cent of the population is foreign born, do not drink alcohol at all, easily the highest of any region in Britain.

The alcohol industry is nothing if not resilient. “By lobbying for lower duty rates, ramping up their marketing and developing new products the big producers are doing their best to make sure the last ten years turn out to be a blip rather than a long term change in culture,” Nicholls says.

But whatever alcohol companies do to fight back against the declining popularity of booze, deep changes in British culture have made booze less attractive. Forget the horrific tales of drunken escapades from Magaluf to the Bullingdon Club. The real story is of the strange death of boozy Britain. 

Tim Wigmore is a contributing writer to the New Statesman and the author of Second XI: Cricket In Its Outposts.