Lynn, I don't think stroke since she would have involvement w/ the wing (droop) and weak or paralized leg. Humans have cranial nerves in the head and neck area that govern things like eye lid movement, eyeball movement, tongue movement, shoulder movement, blood pressure, facial symmetry. I do not know chicken anatomy well enough to know if they have these same or similar nerves, but suspect so. If one or more of those nerves are damaged or bruised, or swollen around that could explain the s/sx. If it is just swollen around the nerves or bruised in the nerves they should recover, but if the nerves have been actually damaged it could be permenant (if that is what it is, just guessing here)