I did a search a search about head shaking. The 4 of 9 pages I read all seemed to have actual problems with gape worm and I am not sure this is my problem. That is why I am posting this here. I have 44 7 (just about) month old Buff Orpingtons. They are on brown leaves in the ccop and run. They get fed layers crumbles and water with vinegar in it. They get oatmeal, fresh vegies, yogurt and corn as treats now snow has started. Here is my dilemma. My ROO.....yes he is a rooster lol. He OCCASIONALLY shakes his head. No other symptoms. His poo is fine, no sneezing or runny nose, no open mouth breathing. This has been going on for at least three months. I waited for it to go away, but it hasnt. So I am wondering, does anyone else have this happen? If it is gape worms, can I see them in the throat? Is this just a twitch? I am hoping this is something simple everybody has went thru. Please let me know.