How to tell a raven from a crow (2012)

These two species, Common Ravens and American Crows, overlap widely throughout North America, and they look quite similar. The bird calls you hear on BirdNote come from the Macaulay Library at the Cornell Lab of Ornithology. Calls provided by The Macaulay Library of Natural Sounds at the Cornell Lab of Ornithology, Ithaca, New York.

Source: www.audubon.org