It may stay bald. One of my call girls has a funny looking head where feathers don't grow. She'll get a little down but that is it.Her wound is fully healed, but no feathers have grown back so far - i wonder if her neck will become a permanently bald spot.
She got her head damaged so many times being over mated They no longer wanna grow back. (despite having plenty other girls..she is just a little flirt)