What's the difference between a raven and a crow? One of the most obvious differences is size, crows are about as large as pigeons, while ravens can be as big as a red tailed hawk, almost twice as big!
Quoth the Raven "Nevermore". Ravens are such brilliant, incredible animals. Scientists still argue whether Ravens or African Greys are the most intelligent birds. I say it's Ravens for the simple fact that they can use tools.