I do not have a lot of experience with short legged chickens; I have noticed with my short legged chicks that motion becomes more hindered with age. I hope I am wrong in this, but I do not think your chick's legs will get better; instead they will be worse as the body and weight increases.I had a Japanese chick hatch with such short legs, he can't really walk. Is that common? Obviously I'm helping him get to food and water, but I'm wondering if it will eventually be ok? Poor thing is stuck on it's belly paddling.