The world’s smallest flightless bird can only be found on the Inaccessible Island in the middle of the South Atlantic. Using DNA, scientists proved that the ancestors of the Inaccessible Island rail flew to the island from South America about 1.5 million years ago.

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The world’s smallest flightless bird can only be found on the Inaccessible Island in the middle of the South Atlantic. Using DNA, scientists proved that the ancestors of the Inaccessible Island rail flew to the island from South America about 1.5 million years ago.