I have a Dutch Bantam hen who is about 4 1/2 months old. Recently she was limping and is holding her leg up and wont put any pressure on it. I checked it out and the leg she babies is significantly thinner than the other one. She lays rolled to the side with that leg kicked out. I'm worried about her because she struggles to walk and more or less falls to her food and water. Anyone have any ideas?????