Woodpeckers are well known birds having sharp chisel-like bills, sharply pointed and stiffened tail feathers, and strongly clawed feet with two toes forward and two back, except in one genus. Their food is insects and grubs, which they get by boring in trees, and from under the bark, clinging to the sides of trunks or the under side of branches with their strong curved nails, aided by the tail, for a prop. They are largely resident where found.