Males usually assist in its construction. The nest has a crudely built foundation, about two feet wide and nearly a foot thick, and is composed of large sticks and twigs. The nest bowl is built of smaller twigs interwoven with strands of bark and lined with soft tendrils of shredded bark, moss, plant fibers, grass, feathers, wool, fur, rootlets or leaves. The female deposits a clutch of four to six eggs in early April. The eggs may vary in size, shape and color but generally are oval, greenish and blotched with brown and gray.
Males feed the females during incubation.
After 18 days, the chicks hatch and are tended at the nest for approximately five weeks. In Connecticut, crow populations have increased since the early 1800s due to their high reproductive potential, opportunistic feeding habit and ability to adapt to land-use changes. Forest habitats are adequate for crow survival but agricultural lands and suburbia are even better. The adaptable crow can exploit farming waste and human-generated trash in addition to more natural food sources. Crows are very intelligent animals and, if trained, can learn to mimic the human voice and use simple tools to manipulate objects.