Half of my chickens have been in a preditor proof run since July. The coop I had wasn't big enough for all of them. I bought too many (doesn't everyone for just in case) I consider myself lucky because I never had a casaulty. They had a plastic play house (set away from the fence) which they love too roost on. You should see 16 trying to fit on it? They've grown and now only 10 are on it. The second coop will be finished this weekend. Sometimes I wonder if stuffing them in the coop for 12 hours is a good thing. My others spend more time in the coop than outside, they want to be couch potatoes and they're demanding a TV and Xbox. They don't get off their roost for morning treats "its too early" But I always know they're safe at night! And I don't have too worry that my luck will run out! And it is so much easier to clean their run when they're locked inside.