H'mm. Have just been out to hack away at some greenery around the hives. One hive has bees, one is an empty box. Lots and lots of bees in separate tight clusters under the hive floor, on the back of the hive, etc. Making a hissing noise. In the chilly windy rain. This is a hive that swarmed Sunday. It was almost like was about to loose a cast, but at 8pm? In the rain? I could have missed a QC and left extra in there when I checked Sun post-swarm, but obviously as am always perfect this is unlikely

Empty hive next door (where the swarm from first hive was installed - breifly- before they departed Monday afternoon) had a few groups of 20 or so bees in tight clusters under the roof. So maybe 100 or so bees altogether. Nothing in the hive itself though.

Checked entrance to inhabited hive is completely clear and not blocked. Am sure bees cannot get from under roof into hive.

So, am I about to loose yet more bees? What am I doing???