beak

As a goose trying to join up with other geese, “he encountered sawtoothed beaks and outstretched necks that kept him at a distance.”

They ransack trash bins and snatch bites from under other birds’ beaks.

In a 2014 experiment, scientists placed a food reward in a tube partially filled with water and watched as crow after crow dropped stone after stone in until the food was in beak-snatching distance.