I have 4 Coronation Sussex chickens between 7.5 & 6.5 months old. One of them, Gimpy, was injured when she was very young (about 6 weeks old) by our overly "friendly" dog. We didn't know if she would make it at the time but she seemed to come through it fine. She got her name Gimpy because she had a limp afterwards but after a month or so the limp went away and she seemed to make a full recovery. Fast forward 4 months and we are very concerned about her. We noticed about 4-5 weeks ago that her tail feathers weren't up like our other chickens and that her back seemed to be a humped with her tail feathers leaning to 1 side. After much research (maybe wry tail or egg bound). We gave her warm bath one day and put some olive oil in her vent. It didn't seem to help and we had come to believe that it was simply a result of the attack when she was younger and that we would just watch her. Her crown and waddle have not developed the deeper red color like the others and we had noticed in the last 10 days or so that she had been laying around quite a bit (while others are up and active). This evening I let them free range a bit and got them some scratch as usual and I noticed that Gimpy would not eat any. She will stay with the flock, albeit slowly, but it seems now that she is not eating. Now I'm really worried. We have had a tropical storm come through and they have had to deal with being soaked and cooler the last couple of days. None of our chickens have come into lay yet but I do wonder if her insides are all twisted up. We do not use a chemical wormer but we do add DE to the food which is supposed to act as a natural wormer as I understand. I'm pretty close to taking her to the vet (I cannot believe I am actually going to pay for it but our family has grown really attached to our birds). I'm not sure about her poop as she hasn't been isolated so I can't tell hers from others. I do see poop with white in it, though, and I'm not sure if that is a concern. Any insight or advice that anyone could provide would be greatly appreciated. Two pics of her follow.