The Eastern Tiger Swallowtail (Papilio glaucus) is a large swallowtail butterfly. It is found in the Eastern United States, as far north as southern Vermont, and as far West as extreme Eastern Colorado. Adult males are yellow, with four black “tiger stripes” on each fore wing. The trailing edges of the fore and hind wings are black which is broken with yellow spots. On the medial margin of the hind wing next to the abdomen there are small red and blue spots. This swallowtail was very mellow and let me get off a few good shots. Maybe he was still in shock from whatever took a few chunks out of his wing. This was taken in my back yard in Rockaway, NJ.