I found one of my hens with blood all over her face. None of the other hens had blood so there was no fights and I couldn't find what could've caused it. I have her in a large kennel with food and water to isolate her. Unfortunately the blood is dried so I don't know how I can clean it off. She acts completely normal but tries to jump up inside of the kennel to get out. I don't want her to hurt herself further but it's for her own good. It seems the area where the blood is coming from is from the back of her comb (the point). Any tips on how to get the dry blood off?