The Spicebush Swallowtail butterfly is also known as the Green-Clouded butterfly. It is native to Florida. They are some of the largest butterflies in the world. Instead of flying high, they fly low around the ground. They eat leaves of their host plant when they are larvae, and they drink the nectar when they are adults. Their wingspan is around 3-4 inches across.
The host plants you can find them on most commonly are spicebush or sassafras plants. They are most commonly found in Florida.