Cavity nester, will use nest boxes. Uses sawdust if provided in nest box. Cavity nester, will use nest boxes. Nests are bulky masses of twigs, leaves, hair, feathers, bark fibers, rope, sometimes cast off snakeskins, and pieces of cellophane. 23 mm. in length.
Nests are of dry grass, forbs, moss, sticks, and aquatic vegetation.
Down added when incubation begins. 74-90 mm. in length. Bulky nest of sticks and twigs, lined with bark strips, evergreen sprigs, and green leaves. 60 mm. in length. Cavity nester, will use nest boxes.