I'm sorry if I sound dumb by asking this, but has my hive just swarmed? If so is it normal for it to have happened during a nectar flow (9th day of summer today, the past week has been perfect. A little warm and quite dry, a bit overcast today).
My wife had just finished telling her mother that she hadn't noticed any difference in the number of bees sicnce we'd had them (only about 3 months now), we looked outside and they were everywhere! Within 5 minutes however 95% of them had landed and you can see quite a few had gathered at the entrance.
Should I be concerned, I checked a few weeks back and no sign of queen cells, added 2 supers & queen excluder to the brood box and they have been bringing nectar in, I am hopeful the middle super might be close to full this weekend. Have I done something wrong, is this normal behaviour, should I be doing more now (checking brood box thoroghly to make sure no swarm cells, I've been told I shouldn't have to worry about this now given there were none on last inspection 3 weeks ago and that a nectar flow had started).
This is a little puzzling!