Birds from the Bombycillidae family are generally outgoing and energetic. Waxwings travel in flocks that can reach into the thousands searching for fruit sources. They are not territorial. Silky flycatchers are more territorial, and nest in casual colonies. Phainopeplas migrate laterally to find wetter habitats after their breeding season ends.
Waxwings are monogamous (muh-NAH-guh-mus), having just one mating partner for the breeding season. The breeding habits of the silky flycatchers and hypocolius are not well known. All of the Bombycillidae species make a small, cup-shaped nest, usually in the strong fork of a tree. Waxwings lay four to six eggs, and silky flycatchers lay two to four. The young birds have no feathers when they hatch, and both parents feed them.
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