Woodpeckers are birds of the order Piciiformes. They have a world-wide distribution with many species.
The Woodpeckers and Wryneck in the order Piciformes have zygodactyle or “yoked" feet, with two toes pointing forward, and two backward. These feet, though adapted for clinging to a vertical surface, can be used for grasping or perching. The long tongue can be darted forward to capture insects
Woodpeckers gained their name because of their habit of tapping and pecking on tree trunks with their beaks. This is both a means of communication to signal possession of territory to their rivals, and a method of echo-locating grubs under the bark of the tree.
Some species are