Small to medium in size, woodpeckers range from 7 to 15 inches in length. They have distinct plumage that features patterns of black, brown, and white, as well as vivid red markings around their faces. Unlike other birds, woodpeckers have one or two backward pointing claws, called a zygodactyl foot, which allow the pests to easily climb and grasp trees and structures. Woodpeckers also possess sticky, barbed tongues used to dislodge and grasp food.