answersLogoWhite

0

A cavity is a hole in something, whether it's a tooth or a tree or a cliff, etc. Cavity-nesting means building a nest in a cavity rather than out in the open. The cavity can already exist, or be made by the animal. Woodpeckers and many other birds build their nests in hollow trees, rather than on a branch.

User Avatar

Wiki User

16y ago

What else can I help you with?