I've got six week old chicks hatched in an incubator. My broody box was nothen more than a card broad box from a washer we had bought cut down to about 20 inches and put in the coop with the rest of the birds. It's my understanding I can't just turn them loose in the coop with the adult birds without a mother hen to protect them. I've got a 1000 sq feet run totally inclosed. So I built a mini coop for the chicks. I plan to partition about a third of the run off for the chicks. I plan to put a 3 or 4 foot fence for the partition. I figure once the chick start flying over the fence they will be ready to be with the other birds. So the question is, 'how high should the fence be? 3 foot or 4 foot?' From what I understand the danger from the adult birds happen in the coop. I need not worry about the adult birds flying over the fence to attack the chicks, do I?