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Biology

Ecomorphology of Beak Shape and Diet in Darwin's Finches

Quick fact

On the Galápagos Islands, a single finch ancestor gave rise to over a dozen species, each with a beak shape precisely tuned to its diet—from cracking hard seeds to probing flowers for nectar.

Why this is interesting

Imagine a group of birds so closely related that they seem like one species, yet their beaks vary from thick nutcrackers to fine tweezers. What drove these beaks to become so different?