I have a buff that must be a few years old now. Not sure what happened to her, but apparently a week ago she flew from one roost to the other and missed, but hit it hard in the chest or thereabouts. She then started walking...with pain it appears. She had a slight limp. I could see no visible injuries. It has progressed to the point that she will pretty much only move a little in the morning or when prodded or forced to move. She just sits on the ground. Not sure what the problem is or if there is a cure. Any ideas? I believe she still laboriously makes it to the feeder and waterer, but she isn't looking like she is getting better. As a kid, chickens that ended up like this stayed that way. The choice to dispatch them soon becomes necessity. Anything I can check?