The number of Spicebush Swallowtails visiting my garden had been going down each year.  However, their numbers have increased significantly in 2003, and I saw a record three in my garden at one time.  It only stays long enough to get a quick meal, flapping its wings furiously while doing so.  It usually samples the nectar from many different flowers.  The large cream-colored spots above, the orange hind wing spot (barely visible in the top picture), and lack of defined blue patches differentiates the Spicebush Swallowtail from the female Eastern Black Swallowtail.  Below, you can tell the difference between this butterfly and the Eastern Black Swallowtail by the "arrow" between the second and third orange spots on its hind wing.  I have often seen it lay eggs on my sassafras tree, and have seen mature caterpillars twice.  The large, green caterpillars have two large, orange and black false eyespots on its head.