![Young takahē, the top of Tiritiri Island, North of Auckland, NZ.](http://static.sciencelearn.org.nz/images/images/000/001/333/full/Takahe_Young_wikipedia.jpg?1674165964)
Takahē are an endangered, flightless bird found only in New Zealand. They were presumed extinct in the 1930s but were rediscovered by Dr Geoffrey Orbell in a remote valley in the Murchison Mountains in 1948. Despite a few examples like this, when a species becomes extinct, it is almost always gone forever.