I have 5 hens and a rooster, all 15 weeks, all came together from one place at 10 weeks. There is one hen who is more shy for sure, but this last week I can hardly get her to leave the coop. She'll come out right away, and then when the school bus shows up, she runs back. I will literally have to bring her out. And she may or may not be sleeping with the others, there was one a little separated this morning but it could have been another that looks like her too. We free range by the way and they all love being out, and she used to be out all the time. I just want to make sure this isn't a problem.