The most distinctive feature is the voice. The rook has a high-pitched kaaa, but the crow's guttural, slightly vibrant, deeper croaked kraa is distinct from any note of the rook.The carrion crow is noisy, perching on the top of a tree and calling three or four times in quick succession, with a slight pause between each series of croaks.

 The carrion crow will eat insects, earthworms, grain, small mammals, amphibians, scraps and will also steal eggs. 

The bulky stick nest is usually placed in a tall tree, but cliff ledges, old buildings and pylons may be used as well. Nests are also occasionally placed on or near the ground. 

Like all corvids, carrion crows are highly intelligent, and are among the most intelligent of all animals.