Claim: The first and second instar of the larvae of the Papilio homerus (the Homerus swallowtail or Jamaican swallowtail) resembles bird droppings which are thought to provide a selective advantage as to avoid predation.
Evidence: Papilio homerus, the Homerus swallowtail or Jamaican swallowtail, is the largest butterfly in the Western Hemisphere. The first and second instar of the larvae resemble bird droppings, with a dark brown body and a white lower abdominal region. This is thought to provide a selective advantage as to avoid predation.