Luckily I was keeping an eye on my chicks from the window. I am not sure why my dog didn't devour my chickens before I was able to run back there. Apparently my coop is not predator proof. Please help! The chicks aren't old enough to live back there, and I still need to make their hen house ( if they aren't all 3 roosters) but I'd really like to feel comfortable leaving them in the pen to play for an hour. The little guys love it back there...Suggestions?