Downy, Hairy and Pileated are species of what bird?

The woodpeckers are part of the family Picidae, a group of birds that also consist of piculets, wrynecks, and sapsuckers. Members of this family are found worldwide, except for Australia, New Guinea, New Zealand, Madagascar, and the extreme polar regions. Most species live in forests or woodland habitats, although a few species are known that live in treeless areas, such as rocky hillsides and deserts, and the Gila woodpecker specializes in exploiting cacti.

Members of this family are chiefly known for their characteristic behavior; they mostly forage for insect prey on the trunks and branches of trees, and often communicate by drumming with their beak, producing a reverberating sound that can be heard at some distance. Some species vary their diet with fruits, bird's eggs and small animals, and some suck sap. The majority of woodpeckers live solitary lives, but the spectrum of behavior ranges from highly antisocial species that are aggressive towards their own kind, to species that live in groups. Solitary species will defend such feeding resources as a termite colony or fruit laden tree, driving away other competitors and returning frequently until the resource is exhausted. Aggressive behaviors include bill-pointing and jabbing, head shaking, wing flicking, chasing, drumming and vocalizations.

Common types of woodpeckers include Downy, Hairy, Pileated, Red-headed, Red-bellied, and Flickers.