Other Bee species

The bees are just loving the oregano and squash flowers, Saw a number of very dark, shiny and leathery looking bees, imperceptible paler rings . I believe they are just some of the European or Western bees which are quite common around here. What is interesting is that 6 doors up the street there is a favourite bee watering dish but I only see the darker European bees there none of my 3 banded Italians. Here in my place I only pretty well exclusively see only 3 banded Italians probably mine. Up the street is closer to the Pinnacles nature reserve. I need to check again but those European bees do not appear to be as shiny. Any other thoughts