Seen down by the river yesterday, a water weed called Ranunculus aquatilis or Water Crowfoot. The first time I saw the river at this time of year, from a distance I thought it was pollution, but I'm told it is a vital part of the environment for the river fish.
While I was looking at it, I suddenly noticed little bright blue biplanes darting here and there. They are Calopteryx splendens or, more easily, Banded Demoiselles.
One very kindly agreed to pose!