Woodpeckers are chiefly known for their characteristic behavior. They mostly forage for insect prey on the trunks and branches of trees, and often communicate by drumming with their beaks, producing a reverberatory sound that can be heard at some distance. Have you ever seen woodpeckers pecking on a tree? Woodpeckers are capable of repeated pecking on a tree at high decelerations to the order of 10,000 m/s2. Since they are shaking their heads at such a high speed, why don’t woodpeckers get a headache?