In Line. Buff-tailed Bumblebees, Bombus terrestris, on Dipsacus fullonum, Fuller's Teasel, Hortus Botanicus Amsterdam, The Netherlands

Which Buff-tails these are exactly, I don't know. There are four kinds, and they're very had to distinguish 'in nature'. Whatever the case, they were happily feasting in line on Fuller's Teasel, Dipsacum fullonum.

Then I had to run in to escape the driving rain...

Done