Went to check on the chickens today and I found a pullet I had added to the flock 3 days ago very badly injured. She's rather quiet, holding her eyes shut for a couple seconds here and there and probably in unspeakable pain. It looks like they've torn her skin right off. Is it going to be worth it to try and nurse her back to health or should I just cull her? I don't want her to be in pain while I vainly struggle to get her healed only to have this happen again. It's cemented my decision to cull a couple older hens I have that have taken turns being pretty mean (but nothing this bad has EVER happened before). The entire back of her neck, from almost to the top of her head, down to where her back begins has been stripped clean.