+A beak is the unique external mouth of a [Bird](/wiki/bird), a rigid structure of bone covered in [Keratin](/wiki/keratin). This versatile tool aids in feeding, preening, and communication, its form reflecting the creature's life.
+## See also
+- [Avian Anatomy](/wiki/avian_anatomy)
+- [Diet](/wiki/diet)
+- [Feather](/wiki/feather)
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