After a relatively uneventful outing on Saturday I decided to head out to the east end on Sunday. I hadn’t been to Petrie Island in a few months, and as it’s one of the best spots for dragonflies along the Ottawa River I thought I would check it out see what was around. Petrie Island is also home to the Hackberry Emperor, a beautiful butterfly which depends on Hackberry trees as its larval foodplant. Petrie Island is the only place in the Ottawa area with a mature stand of Hackberry trees, and as such it is the only place in Ottawa where the Hackberry Emperor is found. I wasn’t sure whether this butterfly would be flying yet, but thought it would be worth checking.