You're welcome Margaret! Glad you like the Angel's Trumpet!
Glen, I have a slight advantage in that it's a little cooler than usual and that slows them down. But come August, they are jet-propelled and I'm dragging from the heat so it gets a little harder to take pictures. My stalking techniques have gotten pretty good over the years, though.
My boss at the museum reports seeing both Giant Swallowtails and Spicebush Swallowtails in the woods behind the museum. So it looks like they are emerging. We had such a mild winter but I'm still surprised to see so many butterflies this early. That mild winter is also why that Angel's Trumpet is so big. Usually, it gets frosted back to the ground every year.