Butterfly on My Porch

The plants that my Dad and I planted in hanging baskets on the porch are full and lush now. I looked outside this afternoon and saw this ginormous butterfly. It is hard to get a sense of scale in this picture, but he was at least four inches wide. As I snuck outside to try to get a closer shot, he took off and flew around for a while. He looked almost like a little bat, all dark and fluttery.