The bees have made their annual migration to the heather. It's not an entirely 'natural' move involving a lot of carrying and a slightly scary ride in a Suzuki Vitara. Meanwhile the heather is starting to flower and at the very least they will gate a late-season boost. At the best we'll get a few supers of lovely heather honey.
In the pictures you can see a few branches around the hive entrances. These make the bees reorientate themselves as they leave the hive. This helps reset their internal navigation giving them a better chance of finding their way back home. They have been moved about 3km — that is a bit borderline for them flying back to the old hive location, making the branches a worthwhile extra precaution.