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Biology

Empty Niche Theory and Adaptive Radiation in Island Ecosystems

Quick fact

On the Galápagos Islands, Darwin's finches evolved into over a dozen species with different beak shapes and feeding habits—all from a single ancestral species—in just a few million years, because many ecological roles were unoccupied.

Why this is interesting

Imagine an island with no predators: a paradise where a single bird species can evolve into hawks, seed-eaters, and insect-hunters all at once. How can one species become so many?