My silkie has been plucking feathers, mostly around her neck. She’s also been acting weird. She spends the first half of the day hiding in the coop. Her companion stays with her, nervously walking around, while the others go out into the run. She’s not been coming out until about 2. I’ve done lots to entertain my flock, fed them protein rich snacks, checked for mites...what have I not considered? How can I help her stop picking out her feathers?