You're right, of course "Professor" Leahy. And they can be quite "murderous" when they encounter an owl. Owls will reportedly pick them off at night in their roosts. In daytime, crows will swarm an owl, an try to "repay the favor". If you are a hunter wanting wing-shooting practice, an owl decoy, a crow call and good camouflage can provide practice on a "murder". (of crows, that is) Sorry, Mike, I just couldn't pass up the opportunity to play with that word.