Damselflies on the Pond

This pair are the common blue damsel fly, Coenagrion Puella.  They usually turn up on our garden pond around this time and start pairing up and laying eggs.  There were two pairs around when I took this photo, but I have seen up to six pairs in action at one time.  One or two females of the big broad-bodied Libellula depressa have been around, but no sign of egg-laying as yet.