I came home Two days ago and found one of my chickens had been pecked in the head by two of our other hens. Head completely bloody and her eyes were swollen shut. I immediately separated her and put her under heat lamp. She ate a small amount that night. But then she stopped eating and drinking. I have been dripping electrolyte water on her beak but she only takes very small amounts at a time. This evening I got her to take a small amount of sour cream twice. That's the only thing I've been able to get her to take in. How long can she go on like this?.