I have a male Muscovy that has diarrhea since Thanksgiving day. I originally was worried he might have a prolapse because his penis was hanging out. It keeps popping out each time he poops now. I have been giving him some electrolyte and vitamin water. I looked his droppings and there don't appear to be worms in them. He otherwise seems to be fine. Also, his feces are rather pungent now. Is this something that could just pass, or should I be considering antibiotics or such.