What does a Swallowtail look like?

Swallowtails are colorful butterflies ranging in size from two inches to well over five inches. Swallowtails also have tail like "spoons" or "sWords" coming from the bottom of the wing. Swallowtails make up the family papilionidae which includes the large birdwings which are the largest butterflies in the world with wingspans up to one foot.