About two weeks ago I noticed my 9 month old orpington hen limping when she walked. I didn't think too much about it because she could still get around pretty well. The next week she stopped coming out of the coop and wouldn't even come down from the roost. I picked her up and looked at her legs and one looked like it was hyperextended and kinda just dangling. I gave her a warm bath because she had gotten pooped on from not coming down off the roost and i put her in a cage by herself with food and water. She didn't seem to really eat much while in the cage. I took her out after about 5 days to see if she could get around and she still is not able to walk. So I am wanting to know what could be wrong with her leg, what can I give her to help it heal, and how long should it take to heal? I do not want her to die but she isn't even trying to eat or drink.