Agreed, however, there are those that would have all mammals (including large ones) removed for the sake of NZ's ecological originality. Perhaps this is an "authentic" thing to do but I believe there is more at stake than original ecological authenticity. Protect the unique birds, definitely, but I haven't heard of large mammals posing a threat to birdlife in NZ except when populations get so out of hand that vegetation is being destroyed - a point we wouldn't reach with well managed large mammal initiatives.