Woodpeckers are part of the bird family Picidae, which also includes the piculets, wrynecks, and sapsuckers. Members of this family are found worldwide, except for Australia, New Guinea, New Zealand,
Sapsucker
…The sapsuckers are species of North American woodpeckers in the genus Sphyrapicus. The genus Sphyrapicus was introduced in 1858 by the American naturalist Spencer Baird with the yellow-bellied sapsucker…
Pileated Woodpecker Feedingon Tree, crop
A black-rumped flameback using its tail for support
Diagram showing the hyoid bone of Dendrocopos major
Use of cacti for breeding and roosting holes allows some woodpeckers to live in treeless deserts, such as the ladder-backed woodpecker, which uses cacti for nesting.