Morgan called on his countrymen Tuesday to make their current cat their last in order to save the nation’s unique bird species. He set up a website, called Cats To Go, depicting a tiny kitten with red devil’s horns. The opening line: “That little ball of fluff you own is a natural born killer.”

He doesn’t recommended people euthanize their current cats — “Not necessarily but that is an option” are the site’s exact words — but rather neuter them and not replace them when they die. Morgan, an economist and well-known businessman, also suggests people keep cats indoors and that local governments make registration mandatory…

For thousands of years, New Zealand’s native birds had no predators and flourished. Some species, like the kiwi, became flightless. But the arrival of mankind and its introduction of predators like cats, dogs and rodents has wiped out some native bird species altogether and endangered many others.