The nest will serve as a cradle for the eggs and the home of the developing birds. Depending on the species of birds, nest construction will be done by either the female alone or with the help of the male. There is a diversity of types of nest constructed. Not all birds construct nests of twigs, leaves and grass placed on a tree limb. A range of techniques are used to create a wide variety of structures.
Woodpeckers are cavity nesting birds and excavate nesting site in a tree.
Bald eagles reuses their nest from previous years, adding new material to the platform each year. Some birds reuse the nests of other species. A clutch is a batch of eggs laid in a single breeding attempt. Some birds may only lay one egg per clutch such as vultures. While other birds such as pheasants lay up to a dozen eggs per clutch.