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I recently returned from an amazing vacation in the Galápago Islands where the impact of evolution is evident all around you. It was in the amazing Galápagos where Charles Darwin developed his theory of evolution by means of natural selection. And it might surprise you to learn that a tiny bird called the Galápagos (or more commonly Darwin’s) finch played a critical role in the formation of Darwin’s theories. The diversity of the various finch species and how they evolved from a common ancestor to adapt to the different food types on each Galápagos island fascinated Darwin. Although these birds act and look pretty much alike (e.g., size, plumage, behavior), there are actually 14 species with a distinctive size and shape of their beak. Some are long and narrow to get at available food in deep cracks of volcanic rock, and some are wide and short to scoop up the moss on the flat rocks by the shoreline, along with everything in between. These birds were only able to survive the harsh and unique conditions on the Galápagos by evolving to their available food supply.

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via Forrester Blogs Sheryl Pattek

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