Human being number 1 arrived via a Pacific islands, bringing sustaining a two the Polynesian Rat (Kiore) and a domestic dog. Europeans late brought pigs, ferrets, stoats, mice, rats, dogs, cats, sheep, kine, & numbers of more mammalian. One, a rats, ferrets, cats, stoats & dogs have tons seriously wedged on the bird and lizard life, camping numerous to extinction. Possums were introduced from Australia and deer from Europe as punt beast, two seriously damaging a forward home ground of several birds.

Witharound recent years, efforts use at times been processed to dislodge possums, rats, ferrets, & extra mammalian from either numbers of offshore islands, big & little, in an effort to link to these wharehouses to something more closely resembling their original state. An figured Thirty rafts of dead possums were flushed from either Kapiti Island, for example. Likewise, efforts come existence mass produced to control such mintage within selected locations on a mainland, like the Karori wildlife reserve in Wellington City, from which all about the ton of dead possums was flushed when the installation of a mammal-proof fence.