Lots of activity around one of my bait hives today. So much that I was beginning to wonder if a small swarm might have moved in when I wasn't around, but to my mind the nature of the activity is more "checking it out" than "bringing in forage". Lots of hovering from side to side in front of the hive (a bit like robbing, I guess?) and landing on the front before walking down to the entrance rather than coming in straight to the door.
Lifting the roof off and having peek inside after sunset is the obvious option, but I don't need to be disturbing them if it is a recently-arrived swarm. I guess I can wait to see what happens. If it is a swarm then it's too late to be moving them anywhere nearby anyhow -- I'm pretty certain they won't have arrived today without me noticing.
James