i need to do a little more research on these guys. i saw a sign at a state park one time that listed them as just a color morph of the female tiger swallowtail. i also seen separate listings for black swallowtails under different species names. i think this will be a good research project for the winter months when they're not flying about outside begging to be photographed. and actually, unlike the yellow tiger swallowtail, these are not that easy to photograph. they're so flighty!
these were all taken with the 70-300 zoom lens. not technically perfect, but very cool shots.