I have a 4 year old, Black Star hen that is having trouble walkingShe's in average weight, is eating well and her droppings are normal. She can stand up OK but her tail is tucked under her. When she tries to walk, she takes a few wobbly steps and puts her wings down to help. She looks like her balance is off. One of her feet has a funny toe that's a bit twisted. Looks like it may have been broken. Sometimes she stands with her toes curled and I have to straighten them and sometimes she can straighten them herself. Her appetite is good. She eats a 16% protein layer crumbles and an assortment of other veggies etc. She eats and drinks as normal. I tend to hand feed her but she can get to the food by herself. If anyone has any idea as to what this may be, I would really appreciate it. P.S. She had been in a coop with 5 other chickens so she wasn't stepped on or anything like that. It seemed to come on very gradually with her droopy tail being the first indication.