In the world there are more than 220 kinds of woodpeckers. Tongue of a woodpecker is so long that can wind a neck of a woodpecker completely. The royal woodpecker is considered the largest kind of woodpeckers. Its length can reach half-meter. And the pygmy woodpecker is the least bird of this kind. Its length doesn't exceed 8 cm. Woodpeckers have such a powerful beak that they can make holes not only in a tree, but also inenough solid metal. So, in 1995 woodpeckers made holes in a fuel tank of the space shuttle "Discovery", therefore its launch was postponed.