What struck me was the four bumblebees all feeding on a single thistle head. There were 10 on the plant in total. Why so many on just the one head?
No interactions present.
These look the same as the bees on this Observation http://ispot.org.uk/node/2508 which I think are Gypsy Cuckoo Bee.
Thanks! I did wonder, but couldn't be sure.
University of Edinburgh and Biodiversity Observatory (OU)
Lat/Lng: 52.1, 0.1
OS grid ref: TL4457