The Haast tokoeka kiwi is a beautiful, unique bird that lives in the foothills of the mountains in South Westland, New Zealand. It is critically endangered, with the number of known birds numbering in the low hundreds. This kiwi is a smart bird that uses passive solar energy when nest building, choosing large flat sun-facing rocks to build its nests under to take advantage of the stored heat. Though once widely eaten by native Maoris and early European settlers, the kiwis are under threat today from loss of habitat and predation from invasive species.