Several of these along bankside thistles on the river Stour in Dorset. A cuckoo bee? No pollen sacks, possibly a well worn Bombus vestalis?
No identification made yet.
No interactions present.
A very worn Bombus pascuorum. Bombus does not have 'sacks'. It just sticks pollen to its back legs, and if it is not collecting pollen there is no pollen mass.
Lat/Lng: 50.9207, -2.2881
OS grid ref: ST798135