[zoltrain]

It's seems brutal, but what introduced species have done to NZ's ecosystem is far far worse. Would anyone knowingly sit back and watch one species that shouldn't even be in an ecosystem wipe out many native species that exist no where else on the planet. The Takahē is holding on by a thread, at one point in a the 1980's it's population was down to 118, in a remote part of New Zealand (Fiordland). It was thought to be extinct, now conservationist have gone full send on the effort to protect them and set up sanctuaries on small remote islands that are pest free (you can never visit this island because they're rightly super paranoid). They were in a position of, if the hedgehogs weren't eating their Takahē's eggs, the Stoats were eating their chicks, or the Rabbits, Deer, and Goats were eating their food supply. This is just one case, since the introduction of man the vertebrate species native to NZ has halved, as in half the species are extinct, if anything they're still not doing enough. The Moa is just one of many species we'll never get to see, the Haast Eagle is another, they were starved to death. https://en.wikipedia.org/wiki/Haast%27s_eagle they also hunted Moa's which is pretty epic, largest bird of prey to have existed on earth.