I have an almost one year old Orpington. She is very lethargic and seems to be shivering. She won't eat or drink anything. Although, I did manage to get her to drink some liquid vitamins. So we isolated her, and she just seems to want to sleep. I checked her crop, there doesn't seem to be anything in it. Then I checked to see if she was egg bound, and didn't feel anything there either. Her comb is normal colored, but feels a bit cool to the touch. I Just went back out, to try to get her to drink some more. She won't drink, and now seems to have some kind of foam in her mouth. Any help would be greatly appreciated.