I noticed the other day that a ton of bees were clustering and tussling around the outside of the Boardman feeder on one of my hives. I decided to watch the situation, not sure if some other hive was robbing, or trying to. There is no sugar water on the outside of the feeder, so the activity was puzzling. Today I noticed that the next door supers were empty, when they had apparently been doing fine. The bees in the empty supers had plenty of room, so they had no reason to swarm that I know of. There were a few ants trying to get in, but not terribly bad. Also I checked for a swarm cluster in the area, and didnt find one. Is it possible that the bees in the one hive decided to join forces with their neighbors, and why might they do this?
Mark