Earlier today, I observed a couple of Drone bees taking flight and, seemingly, return. Fast forward 4 hours, now there a a large group of bees flying in from of the entrance and a lot in the are flying around in the air. I don't see any fighting, so I don't thing it robbing. But, I could be wrong. There was a lot of traffic going in/out the 4" entrance.
Any thoughts?
DB