After the last chick is out, move them to either a large dog crate in the coop, or to your separate coop. I use hay in the nest box over wood chips (shavings). After about a week, My broody and her chicks get to go out of their dog crate and mix with the flock. Mama does a great job of managing everything, and I observe at first to make sure things go well. The hen doesn't count her babies, but is very aware of any chirping. Broody raised chicks will be much more integrated into the flock and wiser about danger, etc. The hen teaches them as they grow. Mary