In New Zealand, the return of wild takahē populations marks a cautiously celebrated conservation victory, and the return of one of the world’s rarest creatures. The birds had been formally declared extinct in 1898, their already-reduced population devastated by the arrival of European settlers’ animal companions: stoats, cats, ferrets and rats. After their rediscovery in 1948, their numbers are now at about 500, growing at about 8% a year.
Actually New Zealand has quite a few islands and more than three that are inhabited, but the three that most people refer to are North Island, South Island and Stewart Island (even though there are larger populations on others). The fourth most likely inhabited island to be mentioned is Waiheke Island (and the third most populated).