When are common ravens usually born?
Common Ravens usually do not breed until they are 2-4 years old. They are monogamous and form long-term pair bonds. Pairs typically stay together year round, roosting near one another at night. Historically, they used cliffs and trees as nesting sites. Now power poles, bridges, and other man-made structures are commonly used. Nest sites are often re-used for many years. The nest usually consists of a base of large sticks woven into a bulky basket with a cup of smaller branches and twigs inside. The cup is then lined with mud, fur, bark, grass, and paper. The female (possibly with help from the male) incubates 3-7 (usually 5 or 6) eggs for about 20 days. The male feeds the female on the nest and helps her brood the young when they first hatch. The young leave the nest after 4-7 weeks. At this time, they can fly short distances and usually stay close to the nest for another week or so. http://www.birdweb.org
