I have 10 3 month old pullets. When I went out to feed them this morning they were all fine. A couple hours later I peeked in on them, and one was all bloody. The others had apparently pecked at her vent until she was all bloody and raw. There is nothing hanging out, and she isn't too lethargic. I have her separated from the rest of the flock now. Should I leave her alone and see if she recovers? Is there anything I can do for her, or do I just put her out of her misery? Help!