Hi...I have a couple of questions. 1. I have 12 three-week-old chicks in the house. I would like to introduce them to the flock (four hens one roo). When can this be done? My husband wants to section off a portion of the coop for them without a top. Will the grown ups try to get at them? 2. I have a small hen who hatched out four chicks a week ago. They are in a dog crate outside the run but I let them out during the day. The mother sticks close to the run so I'm wondering when I can put her back in (along with babies). Thanks.