blue dasher - timpanagos wtp, utah lake, utah


A Skimmer family dragonfly, the Blue Dasher seemed to be common. This one has raised its abdomen (the 'obelisk posture'), which is thought to help prevent overheating on hot sunny days.


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Images Index Canon EOS 5D Mk III
UK Slide Shows Canon EF 100-400mm f/4.5-5.6L IS II USM @


Non - UK Slide Shows ISO 250
UK Images Aperture: f/14 -1/3 stop
Non - UK Images Exposure Time: 1/250 sec