The key is remembering to close the coop door. We get lazy and only close the pen/run door since we let our chickens free range all day. The bobcat climbed over the fence and went into the coop and picked off chickens off their roost.I hope so too. My neighbor lost his whole flock to hawks, foxes and racoons. I spent a lot of time trying to make my coop predator proof. I dug trenches around the outside and buried the welded wire to prevent them digging in. I then putt very heavy rocks on top of the buried wire to make it even harder.