Birds do not have teeth, although they may have ridges on their bills that help them grip food. Birds swallow their food whole, and their gizzard (a muscular part of their stomach) grinds up the food so they can digest it.

Is there a bird with teeth?

These serrations are why many consider toucans as birds with teeth. Some scientists believe that their “toothy” bills may help them to scare off other birds so they can raid their nests.

Why do birds have beaks instead of teeth?

“So there may be an unknown mechanism that contributes to tooth loss.” Evolution of beaks are thought to be ecological adaptations (ref) that triggered the explosive diversification of birds after the mass extinction at end of the Cretaceous, 66 million years ago.