My three 3wk old chicks are very flighty. Every time I take the wire off the top of the brooder the black star flies out. So I put them into my wire broody buster cage in the big girl's coop. I'm going to let them run around the big coop during the day when the herd is out free ranging then I will put them in the cage at night. They have one more week under the heat lamp, it's still getting cool at night. I did put a nesting box out in the run so the girls can use it when they come back to lay. They have checked it out, with a fake egg in it. Do you think they will use it or go into the bushes?