Can somebody please tell me if my duck has worms or something? Everytime he poops something comes out his butt thats as thick as a pencil and its length varies. He squirts liquid poo every time and whatever it is sucks back up his butt when he's done. He is my pet duck and im about to take a stool sample in to get a dog fecal test done. Does this sound like it could be worms? Does anyone else have a male pekin that does this when they poo???