I came home from work today to find one of our turkey poults having seizure like symptoms. It was half standing, and kept swinging it's head back and forth. Almost like it was scratching it's head on it's back. It won't stop unless I support it's neck and head. As soon as I let go, it starts swinging it's head back and forth. Injury? Disease? Should I be concerned for the rest of my flock? I have it seperated in my bathroom for now. The turkey is about four months old. None of the other 6 turkeys are doing this.