Almost every woodpecker species nests in tree cavities, although in deserts some species nest inside holes in cactus and a few species nest in holes dug into the earth.

• 尽管有些在沙漠生存的啄木鸟是将巢筑在仙人掌身上的洞里的，还有一些是在地面上打个洞，然后在洞里筑巢的，但是几乎所有种类的啄木鸟都是在树洞里筑巢的。