How a Tiny Flightless Bird Ended Up on an Island in the Middle of the Ocean

An island half the size of Manhattan in the south Atlantic Ocean is so isolated, it's called Inaccessible Island. On that island, and only on that island, live nearly 6,000 puny featherballs called Inaccessible Island rails. But they can't fly, and the island is only a few million years old. How did the birds get...