They use the curved hook at the end of their beaks to help them methodically hunt for caterpillars. Fill your favorite ...

Under these drastically changing conditions, the struggle to survive favored the larger birds with deep, strong beaks for opening the hard seeds. Smaller finches with less-powerful beaks perished.

This hook is essential for tearing into the flesh ... By observing the shape of a bird's beak, you can gain valuable insights into its diet and how it has adapted to its environment.