They make holes so they can store their food during the migration time and come back and be able to have food without "hunting" for food. Also so after the migration time they can come back and continue or if they made a big enough hole before the migration they can have a home and will not have to "search" for a empty hole in a tree to live in.
they are looking for insects to eat, or making a home.
Woodpeckers make holes in trees, while others just find holes in trees
They normally have roost holes in trees, where they spend the night.
There are many different species of woodpeckers found in different areas. All woodpeckers make their nests and take shelter in holes that they make in trees.
Woodpeckers are looking for food. They are looking for insects in the bark/tree.
Trees provide food, shelter and a nest site for Woodpeckers.
Woodpeckers nest in holes that they hollow out in dead trees.
It's where they make their homes.
Yes, acorn woodpeckers spend most of the year storing acorns in holes they drill usually in oak trees. They eat the acorns over the winter.
No they don't. They peck the holes looking for bugs to eat. They chip away sections of the bark and tree hunting for insects that live in the tree. Check out the article http://www.thecanadianencyclopedia.com/index.cfm?PgNm=TCE&Params=A1ARTA0008701 It contains a description of how and why woodpeckers drill the holes.
No. Some birds nest on the ground (curlews), some (woodpeckers) make holes in trees and some lay their eggs in other birds nests (cuckoos).
Woodpeckers eat bugs that live under tree bark, like termites. So they peck holes in the wood and use their extremely long tongues to pick up their prey. And they drill cavities in trees suitable for their size as a nest.
No, they peck wood/trees looking for insects.