No nest material is added, although litter may build up over the years.

A single egg is laid on a broken branch with no nest material used.

It is a simple scrape with no nest material used.

Saliva is also mixed into the nest materials to soften them.

This tail is weakly prehensile and used to carry nest material.

The term is also used to describe the stealing of nest material or other inanimate objects from one animal by another.

The female lays three to six white eggs, though the damp nest material soon stains them with brown.

He may also carry nest material into the nest hole.

Males sometimes bring nest material to the female cardinal, who does most of the building.

She seems to be unable to carry nest material and must rely on whatever is within reach.