The critically endangered takahē are breeding in the Greenstone and Rees Valleys of Otago. Why does that matter? Well, for many years there has only been a single viable wild population of takahē in the remote Murchison Mountains of New Zealand. Other wild populations were established in the Stuart Mountains and Kahurangi, but these have largely failed to establish themselves. This has left New Zealand with a challenge: when the majority of a population is found either in sanctuaries or on offsh