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Pendulous Nests. Pendulous nests usually have a round or oval nest area with a neck that suspends from the tip of a branch. The neck of a pendulous nest varies in length and width depending on the bird. Different birds create entrance holes in different areas of nest.
Breeding pair may have a helper, one of their offspring from the previous year. Nest site is in hole in tree, either natural cavity or old woodpecker hole; averages about 35' above the ground, ranging from 3' to 90' up. Unlike the chickadees, apparently does not excavate its own nest hole. Will also use nest boxes. Nest (probably built by female) has foundation of grass, moss, leaves, bark strips, lined with soft materials, especially animal hair. Bird may pluck hair from live woodchuck, dog, or other animal, even from humans.