She was being attacked by a hen and being ignored by her mother, she'd spend the day hiding in the coop alone. I've taken her in to care for her myself, she has lots of stuffed toys, and since she was always alone anyway, she is content and warm inside- not scared or screaming at all. She's perked up a bit and I just noticed she has a featherless crop. Why? should I be worried/ need a vet?