I have a mixed breed pullet approx 16 weeks old, who about 10 days ago started limping and favouring one wing. I also found what seemed to be two "pecking" wounds on the back of her neck. I put her in a crate to keep her safe from the others and she has deterioriated badly over the last few days. She is still eating and drinking, but is VERY wobbly on both legs...she basically can't walk, just kind of topples back and forth from one leg to another. Her back appears to be somewhat humped also. I have no idea what to do for her. I have had vitamens suggested as well as the possiblity of worms. Thoughts anyone? If I don't treat her for something, I think I may lose her.