This is a dark-morph (and thus a female) eastern tiger swallowtail (Papilio glaucus) on the buddleia outside our kitchen door. The tiger swallowtails are the most numerous, large butterflies in our garden, followed by monarchs (Danaus plexippus). Otherwise, we only have occasional visitors. There are a lot of smaller butterflies and skippers, particularly small skippers. But the large, gaudy swallowtails are fun to watch and among my favorites.