Emperor Dragonfly (Anax imperator)
The Emperor Dragonfly is an impressive sight as it hawks for food above Hillditch pool. You may see it begin to dismantle its prey of flying insects, including butterflies, on the wing, but it will often settle high up in a tree to finish its meal. This the largest dragonfly in Britain and its flight period is from mid May to early August, with June and July being the best months to look for it. The females are green with black markings.