Are Prey Animals Scared All The Time?

In September 1865, a young Charles Darwin first set foot on the Galapagos Islands and started taking notes. These writings, later published as The Voyage of the Beagle, featured long accounts of the island's geology and wildlife. They contained the kernels of what would become his "Theory of Evolution by Natural Selection," and brought him great acclaim as a keenly observant naturalist. 

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