Several raven relatives live in Yellowstone, including the common raven (Corvus corax). Common ravens are smart birds, able to put together cause and effect. Ravens are attracted to wolf kills and some have learned to follow wolves while they hunt elk. They must wait to begin feeding until wolves tear into a carcass as ravens are not able to rip open thick skin. Ravens are willing to eat almost anything and are frequently seen near parking lots searching for food—some have even learned to unzip and unsnap packs. Do not feed them.
Recent surveys indicate 200–300 ravens are present in the northern range of Yellowstone. Based on a 2012 study by biologists at the University of Washington, 64% of the total 243 ravens counted on the northern range were in natural settings away from human areas, while 36% were in human areas.