My chicken is an adult, laid eggs, she has a large swollen lump between her legs, below her back hole. She acts normal, eats well but I notice its getting big and she can't walk very well now. If you know anything that I can give her, I would appreciate it. I tried to attach an image but I couldn't. Please help. OH i forgot to say that I'm quite sure she is not egg bound. I massaged her, felt it but didn't feel an egg.