Adrian Jones' photos with the keyword: Halictidae

This is the best image I managed of a large roost of solitary bees, most were in grass seedheads and due to the wind impossible to photograph. I'm hoping to go back and try again when the weather is more favourable. If anyone has any idea of the species please let me know. Image was taken at The Bog, Shropshire, UK. Natural light, uncropped.