Oak woodland meadow, serpentine habitat nearby, about 1500' elevation
Updated: I'm especially curious about these! In Bindweed. Please note the different-colored eyes and different body shape. They were "friendly" towards each other, sharing the flower, and did not otherwise interact. This Observation is for the DARK-EYED bee at the top of the first photo. The Observation for the BLUE-EYED bee is here: https://www.inaturalist.org/observations/77602608
This bee was visiting my Foxgloves (Digitalis) and occasionally the roses as well.