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Wednesday, April 16, 2014

Ravens in Alaska

Ravens in the Interior begin displaying courtship behavior in mid-January, and by mid-March adult pairs are roosting near their nesting locations. The female lays from 3 to 7 eggs. Only the female incubates the eggs; she is fed by the male while on the nest. The chicks hatch after about three weeks blind, featherless, and helpless: a characteristic known as altricial. They grow quickly, as both parents feed the young by regurgitating food and water which is stored in a throat pouch. About four weeks after hatching, young are ready to leave the nest, which is usually around the first week of June in the Interior. Young remain with parents after fledging.
Ravens reach sexual maturity at 3 or 4 years of age and mate for life. Ravens are probably very long-lived in the wild; one captive bird died of old age at 29 years.

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