A young hen that was hatched this summer began a strange behavior when she approached adult hood. She would periodically lower her head, almost dragging her beak, without touching the floor with it, walk backwards a few steps. She sometimes does this 3 or 4 times in a row. A couple months later, a young rooster, also hatched this summer began doing the same thing, except he actually drags his beak across the floor. There is nothing on their beaks. any suggestions?