During he last few weeks, I have failed to find any Migrant Hawkers and only a few Common Darters. The weather has been warm, but not sunny, which may help explain this. I am sure there are Migrants out there and maybe even a few Southern Hawkers left.
As the sun gets lower in the sky, and its warmth is reduced, Common Darters rest on light, reflective surfaces such as logs, fence posts and even leaves. At Ditchford, I found one resting on a pile of Canadian pond weed dredged from the lake by the fishermen. I also found this mating pair on some concrete steps.