I have a 12 year-old rooster who rather suddenly developed a severe problem with one or both legs. About 10 days ago, he seemed unsteady on his feet. This developed into a limp, favoring his right leg. This became worse rapidly: first he couldn't bend down and keep his balance, then he couldn't keep himself upright, and now he hobbles on his elbows most of the time. He also isn't eating or drinking much, possibly because he has trouble keeping in one position to access food. I've taken him to 3 vets. The first thought it was a general neurological problem. He gave his a thorough physical exam and couldn't find anything wrong with his leg or joints, or any sign that anything was painful. He referred me to a bird vet. He also gave him a shot of steroids. The next day he was considerably improved. She took a full set of xrays and said that there was no sign of injury, no tumors, and his organs all look normal on the xray. She also took blood and stool samples but I don't have the results yet. She said she was basically stumped but didn't think it was a general neurological problem. She said he has good control over his body and isn't physically disoriented. She prescribed 3 oral meds: an antibiotic (Tribrissan), a non-steroid anti-inflammatory (Metacam), and a probiotic. I'm not sure if any of them help or not. He's generally getting worse. Yesterday, the day after I started the anti-inflammatory, I thought he was a lot better. But by evening he seemed worse again. During the day today he seemed to improve somewhat. The third vet thought there might be pressure on his nerve causing him not to be able to use his right leg. He suggested a few weeks of steroids. He said if the symptoms recur after the steroids are removed, he probably has leukemia, causing enlarged lymph nodes that are pressing on the nerve, or something else that is basically untreatable. Otherwise, it could be an injury and relieving the pressure would solve the problem. Since you can't combine or overlap the Metacam and the steroid, I stuck with the Metacam, hoping that would work with fewer side effects. But he seems to be generally deteriorating. He really isn't eating much and is losing a lot of weight. His other behavior seems normal. He's crowing and paying attention to the other chickens. I have 6 other chickens, none of whom are showing anything like this. He is in with one hen who is 6 years old. The others (2 years old) are in a separate part of the coop. He and the hen free-range during the day. The others are in a run most of the time. Anyone have any ideas? I know he's old for a rooster but I'm very attached to him and he's always been generally healthy. He did break a wing last year. It healed, the bone wasn't dislocated, but he doesn't fly that well since. He also had a tussle with a fox about 6 weeks ago and got a couple of small wounds on that leg but it healed up and I don't think there's any relation. I'd appreciate any feedback or ideas. Thanks!