I have a hen who is sitting on 12 fertilized eggs. She is nesting next to the door in the corner of the coop that she shares with nine other hens. At what point should I move momma and new babies to a separate location? The coop is raised and the door is 3 1/2 feet off the ground so if a baby falls out it would be injured. Do I wait until all of the babies have hatched and then take them away from the mama? Or do I move mama and babies into a separate brooder pen? I would have to use a large dog crate and that might be a little cramped if all 12 eggs hatch. Help please! They should start hatching Sunday. (Photo to show location next to door)