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Black Robin

--The black robin or Chatham Island robin (Petroica traversi)
is an"endangered bird" from the Chatham Islands off the east coast of New Zealand.
It is closely related to the South Island robin (P. australis). It was first described
by Walter Buller in 1872.[2] Unlike its mainland counterparts, its flight capacity is
somewhat reduced. Evolution in the absence of mammalian predators made it vulnerable to
introduced species such as cats and rats, and it became extinct on the main island of the
Chatham group before 1871, being restricted to Little Mangere Island thereafter.