So I noticed that some of the foraging bees have this white powder looking substance on their thorax. See pics. I live in a town called Castro Valley, CA and it’s February. It’s unusually mild for this time of year and the bees are in full swing. I’m hesitant to do a hive inspection as I prefer to let them bee (pun). I’ve read that this can be associated with white pollen rubbing off on the bees from particular flowers.
Any concern? These are Italians.