I have a young BLRW roo and he was doing fine up until this week. I have him in a large elevated cage at this time with 4 pullets. Now his right leg seems to be unable to support him properly. His foot appears to be turned out and his knee is somewhat bowed inward. If that makes any sense. It's like he's double jointed or something, and his leg bends the wrong way. He can stand and walk on, but very clumsily. I don't know what is wrong or how I can help him. Any suggestions would be appreciated.