Hello All! I am integrating 4 chicks (~8wks) in with my flock of 2 pullets (who are about to start laying) and it is slow going. I've been bringing the chicks inside at night but that will not be possible much longer. There's no easy way to block off a part of the coop, so I'm thinking of using a large heavy-duty plastic dog crate as a temporary coop for them. With a lock on the door, will this be secure from predators like raccoons, or can they chew through hard plastic? Thanks!