Yesterday we had two Eastern Tiger Swallowtails in the yard. In the afternoon we visited Wheaton Regional Park, which includes a lot of tulip trees, their larval food plant. We spotted our first butterfly on a patch of bare ground as we entered the park. Continuing on to the gardens, we arrived at the massive bottlebrush buckeye at the edge of the woods, to find a dozen or more swallowtails and several hummingbird moths visiting the blooms. They were all in motion, but I did manage to capture two in this photo.