I have a 5 month old Favorelle pullet that has been showing signs of lethargy and not moving with the other 6 chickens that I have. I noticed her comb was hanging to one side and one of her eyes seemed to bulge. The next day I noticed she had a large knot on top of her head that was causing her comb to hang to the side and her eye to bulge. I am not sure what has happened to this chick as they are free range and it could be a number of things. I know that she has no signs of injury such as cuts, scrapes, holes or etc. The only antibiotic I have is Clavamox and that is what I have given her, though it has been a challenge to get her to take it and I haven't been getting enough in her. She will eat a little but drinking is little to none. I moved her inside where it is cool, which no doubt has gained her a day or two more. What would you suggest I do. She is trying to fight whatever it is but she is out of it. She tries to talk and just sounds drunk and she doesn't even walk. She only really moves and flaps around when I try to give her medicine. This is a chicken that is normally kinda mean and intolerant but she lets me pick her up without a fight. I am wondering if it is a sign of brain damage. Any suggestions would be good. These are the best pics I can get of it.
