Fawn Darner For most of August, I'd been expecting the arrival of a dragonfly whose behavior is more akin to bats than odonates—an insect that only begins to come out at twilight. The Fawn Darner (Boyeria vinosa) is one of the first dragonflies I ever learned to put a name to, and as I became more familiar with these creatures, I discovered that they have what biologists term a crepuscular lifestyle. When the sun goes down, the Fawns, probably so-named because of their spots, begin to fly. Often enough, I would spot them circling the house, mostly flying low and hugging the shadows but occasionally soaring upward, where they would be risking discovery by the equally crepuscular bats. I never witnessed an untoward encounter, so the Fawns must know how to avoid capture. I was beginning to think that these large dragonflies, which are about two and a half inches long, were not going to appear this year, when one flew towards the kitchen porch light. It was happy to pose all night and the next morning, before heading off into the shadows.