Black Saddlebags dragonflies (Tramea lacerata) like to fly high overhead, back and forth over trails and fields in pursuit of tiny insects that are often invisible to my eyes. They are pretty easy to identify because of the distinctive large dark patches on their wings that you can pick out even when they are flying. They are a challenge to photograph, though, because they rarely seem to perch.
When I spotted this patrolling Black Saddlebags on Monday at Occoquan Bay National Wildlife Refuge, I decided to try to capture some in-flight action shots of the dragonfly. When I am trying to photograph a dragonfly flying over a pond, I can sometimes pre-focus on an area, because the dragonfly stays at the same height above the water and flies in a somewhat predictable pattern. That technique does not work, however, with a dragonfly like the Black Saddlebags that changes altitude and direction quickly and without warning.
The first two photos give you a pretty good look at the wing pattern of the Black Saddlebags. If you look really closely at the first photo, you will note that the dragonfly has tucked in its legs under the thorax (the “chest” area), probably for aerodynamic reasons.
In the final photo, I noted that the dragonfly’s legs were extended. What was going on? As I was processing the shot, I noted some small white spots in front of and just above the dragonfly. At first I thought these might be dust spots on my sensor, but they were in different places on different shots, so I rejected that hypothesis. I think that those white spots, which you can see in the final image if you click on it and look very carefully, are small insects and the dragonfly was extending its legs to snag those insects.
The Black Saddlebags is one of several dragonfly species that migrates in the fall and this one may have been fattening up in preparation for the upcoming journey. Whatever the case, it was a fun challenge to try to photograph this dragonfly flying overhead.
© Michael Q. Powell. All rights reserved.
Like this:
Like Loading...
Read Full Post »
