Either yesterday or the day before when my kids were out in the coop, one of them went to close the coop door and one of the bigger RIR cockerels pushed one of my Bantam BO pullets into the doorway right as my daughter closed the door, and the little girl got caught. After that my daughter noticed that the pullet was staggering around and tonight when I got home I found that they had brought her inside the house. They said she was being picked on out there and my mom said Hailey (that's her name, Hailey Buff. Her sisters are Hilary and Ginger) was cocking her head strangly and seems to be having difficulty lifting one leg and walking properly. She also isn't peeping very loudly, however I don't think I've ever heard my BO's peep much. They are the quietest of all my birds. She is eating and pooping fine, she is just cocking her head a lot and losing balance. Is is cause she got caught in the door, or could there be a virus involved? She is the only one affected. She is 15 weeks old, otherwise completely healthy, and is right now sitting in my lap as though that's where she has belonged her entire life. She isn't making any attempt to get down. Granted that my BO's are all sweet and gentle, almost to a fault, nicest birds ever, so I'm not sure if her clutchmates would be this docile too unless I brought them in the house and tried it. I am concerned about the staggering and head tilting. Could she have had a stroke? What are the possibilities? Thanks to anyone that reads this.