We have 53 chickens which are just dying to get outside. I'm buying a run tomorrow...10 x 6...but I've been wondering if I could let the roos run loose? Thing is, I have 6 cats outside. They are good mousers but I've also seen them eat a bunny (!) so I know they aren't afraid of bigger prey. Will they eat the chickens? They show only passing interest when I have the screen door in the coop open all day. One lays about 10 feet away and watches them half the day. Sort of like kitty TV. Am I better off to just leave them in the run or will chickens peck and defend themselves?