This cluster of bees was found under an Erigeron bloom just at the treeline on the Iceline Trail in Yoho National Park. Awkward to photograph, I solved the problem by gently bending over the flower stem to take the picture, then inverting the photo in Lightroom again to gives its proper perspective. I believe there are just three bees, and why they grouped together like this I do not know.
(Nikon D80 and the Tamron 90mm macro lens mounted on a Kenko Pro 1.4x tele-converter. Nikon R1 flash system, diffused. ISO 250, 1/90 @ f45. Processing in Lightroom 2.7)