I've called them in with a tape game caller here in the city and shot them with a .177 pellet gun. But those is dumb city crows. If anyone gets a crow with a slingshot, please post and I will bow down, as that is hard to do! Benonymous; great story, thanks. Smart, but can't count, lol.
Yes, they are extremely smart. They will sit on the roadside dining on roadkill all day long as cars whiz by 5 feet from them at 75 mph. But stop your car and get out within 300 yards, and they're gone.