The weather has turned colder, with only a few hours when it's warm enough for the bees to fly. Yesterday they were very busy in my out apiary.
My bee group remarked that their hives had a lot of activity at their entrances, with lots of orientation flights. They suggested that there had been a burst of young bees hatched in the previous days and these were getting to know the area. The drop off in brood rearing may also have been releasing nurse bees to fly.