I have 2 adult chickens one is a hen that just started laying eggs 4 days ago and one is a rooster. I purchased 15 babies and they are now 9 weeks old. I want to put all of the chickens together in the same coop. I know that they have to be introduced for a while first but after that can they be put together? How long do I have to wait? I don't want the rooster to hurt the young ones. Thanks for any help you can give me.