The takahē ('Porphyrio hochstetteri'), also known as the South Island takahē or notornis, is a flightless bird indigenous to New Zealand, and the largest living member of the rail family. It was hunted extensively by Māori, but was not named and described by Europeans until 1847, and then only from fossil bones. In 1850 a living bird was captured, and three more collected in the 19th century. After the final bird was captured in 1898, and no more were to be found, the species was presumed extinct. Fifty years later, however, after a carefully planned search, takahē were dramatically rediscovered in 1948 by Geoffrey Orbell in an isolated valley in the South Island's Murchison Mountains.

Its overall length averages 63 cm (25 in) and its average weight is about 2.7 kg (6.0 lb) in males and 2.3 kg (5.1 lb) in females, ranging from 1.8–4.2 kg (4.0–9.3 lb). Its standing height is around 50 cm (20 in). It is a stocky, powerful bird, with short strong legs and a massive bill which can deliver a painful bite to the unwary. Although a flightless bird, the takahē sometimes uses its reduced wings to help it clamber up slopes.

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