I designed and built this circular coop for my six chicks. It is five feet in diameter with two windows, one "people door", and three nesting boxes (accessible from a door on the back). It has a pop door in the floor with a ramp leading to the underside of the coop, where they will be very safe from predators if I happen to be away for the day. The hardware cloth on the walls is buried about a foot out and away from the coop. I also poured concrete in the trench. Take that foxes and raccoons! I'm currently working on a 5'x10' moveable run to give them more space to play.