Sonoran Desert Bees
According to Stephan Buchman, there might be as many as 1000 species of native bees in the Sonoran Desert. Many are very small and some are brilliantly colored but best of all, most are solitary which makes them not as threatening as the European honey bee. They are all fascinating to watch as they fly in and out of holes in the ground, trees, or even spaces between blocks. (Solitary Bee loading up on pollen from an Echinopsis)