The Common Raven is a large, black bird, standing approximately 24 inches tall. It has a thick bill, a shaggy hackles on the throat and a wedge-shaped tail. Ravens are often confused with American Crows, but crows can be distinguished in a couple of ways.
American crows are rather uncommon in Yellowstone.
A year round resident of the Yellowstone area, Ravens are found commonly throughout the park, often migrating to lower elevations during the winter. However, some pairs do not migrate. Behavior These opportunistic feeders take a variety of foods. They take advantage of seasonal berries, small mammals, young birds and amphibians and of course are always present to feast on carrion. When food is plentiful, such as is found in the summer, ravens are more spread out and function primarily as predators.