My light brahma hen has developed these symptoms: Walking upright and balanced in circles, but not in place spinning circles. Big wide ground covering circles at normal chicken moving pace. Her head/neck seems to be at a 90degree angle to her body, definately not upright and she seems to try to straighten it, but it kind of moves around in a circular fashion and remains sideways with her eye pointing upwards. (Willget some pictures now and post in a few minutes. She's in a large coop with 17 other girls and one rooster. She (and the other light brahma) are the largest in the flock, at 7 months old. Any ideas?