Crows are big. You should see it in my back yard when the blue jays do that to the Great Horned Owls! That is a sight to see! They yell at the owl and harrass it and then you hear them all the way down the street chasing the owl off lol
Hawks and Owls - they go after the defenseless (as nature would have it - easy to eat so they can live). But they don't want to fight
