I just started with 1/2 dozen girls last spring. All has been great, until recently. One of the girls was looking scrawny, loosing feathers and I noticed the others bullying her when I would bring treats. I have since seperated her in hopes of it helping and so that I could monitor her food/water, feces and other habits from the others. I also wanted to be sure her environment was ideal for best recovery so I setup an isolation area. I've wanted to let her out to range during the day but it's been cold and shes none to savvy about being caught. Please help, I'm not sure what to do. The others all look great, shes the only one. She's completely stopped laying, vent area looks clear and I didn't see any signs of external parasites. Her skin looks yellowish and wrinkly. She's losing quite a few feathers. She didn't eat or drink the first couple days I isolated her but that is much improved now. I think shes looking better already than she first did but not what I hoped to see after a week. Shes warm and cozy in her isolation pen.