Cal, that pic was shot using a Pentax K-3 and a 90mm Tamron lens.
And you're right...the bees do need water. The bees use our "birdbath" much more than birds do. Not sure if we could even grow water lettuce here...for sure don't have a spot for it. But we're mindful about keeping water around for the bees (normally). Have a neat pic (somewhere) of a wasp in the birdbath floating on the surface tension. The shadows of the water bending under its feet are really interesting.
Here's the shot I posted on
https://bees.photo today:
