On hot, summer days, they may lower their wings to shade their thorax and point their abdomens skyward to reduce direct contact by the sun’s rays.
So that might be your answer!
Melanie, different dragonflies use different type of waters for breeding. I think this statement indicates their preference for laying eggs:
Look for them near quiet or very slowly-moving waters.
https://www4.uwm.edu/fieldstat...
We could do with rain! I didn't know you had mosquito control, it must be horrendous. I found some history on it ..
http://mosquito.ifas.ufl.edu/F...
I wondered how control is achieved as mossies lay in stagnant or still waters usually, found some info ..
http://www.volusia.org/service...
How do they spray in your area and what do they use?