where were the finches on that one island where that guy learned about natural selection based on beak density

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where were the finches on that one island where that guy learned about natural selection based on beak density after a huge drought

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On Daphne Major, a small island in the Galápagos (Ecuador). Peter and Rosemary Grant studied the medium ground finch (Geospiza fortis) there and after the 1977 drought observed selection for larger/deeper beaks because only tough, large seeds remained. Want more details or a reference to their paper/book?

where were the finches on that one island where that guy learned about natural selection based on beak density after a huge drought

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