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“A Little Bird Told Me” … Happy Birthday Charles Darwin

10,000 Birds

How did they get from the Caribbean across the Isthmus of Panama, which is mountainous and very much in the way? They did it before the Panama Land Bridge formed. The Panama Land Bridge probably started to form, as a series of islands, about 15 million years ago, and by 3 million years ago it was fully in place.

Tortoises 191