So I set out my extracted supers for the neighborhood bees to finish cleaning up and I noticed something strange. It appears they are cleaning/polishing around the entrances as if it were their home hive. Makes me think a swarm moved in but two problems with that...1. No pollen coming in and 2. The timing would have been impeccable as they've only been sitting out for a couple of days. Anybody seen this behavior in their clean out supers before?