My French Copper Marans are 3 1/2 months old. I have noticed the "runt" of the group sits a lot, she gets up and walks around some, but most of the time sitting while eating and drinking, and I have noticed lately she drops her wings also. None of the other hens or roosters shows anything like this. I keep plenty of fresh water and food in several different areas of the Coop. Any ideas what might be going on with my young hen?