South Island Robin

The South Island robin (Petroica australis; also known in Māori as the kakaruai) is a sparrow-sized bird found only in New Zealand, where it has the status of a protected endemic species. The birds are sparsely distributed through the South Island and Stewart Island / Rakiura, although the distribution is not continuous. The nominate, and the Stewart Island robin (P. australis rakiura) are the two subspecies. The species is closely related to the North Island robin (formerly P. australis longipes, now considered a distinct species), and also to the extremely rare black robin (P. traversi) of the Chatham Islands. == Taxonomy == The South Island robin has two subspecies: P. australis australis, the nominate form, and P. australis rakiura, the Stewart Island robin. These subspecies do not overlap in their distributions. The North Island robin (P. longipes), the tomtit (Petroica macrocephala), and the black robin (Petroica traversi) in the Chatham Islands are closely related species. P. traversi seems to be a Chatham Island derivative of P. australis, although the position of the most recent common ancestor has yet to be determined. The family Petroicidae of Australasian robins has a total of 49 species, mostly in Australia, New Zealand, and New…