April (Autumn) in NSW Australia. Dearth - nothing much currently flowering. 3 month old hive, filling most of the 8 frames but little in the way of honey stores. Entrance reducer in place. Put an internal feeder in, using 2:1 syrup. Next morning, found the girls in a frenzy, buzzing in a huge cloud outside the entrance to the hive. Observed one short wrestling episode on the landing board, but nil else. Bees climbing up box, but not dipping on take-off. Some bees at box junctions outside, maybe smelling syrup. A few bees returning with pollen.
After dark, I closed off the hive completely. Next morning, about 2 hours after sunrise, with the hive still closed off, only 2 or 3 stragglers outside. No sign of any robbers. Opened up the hive, and bees boiled out again, in a cloud.
Is this robbing or just exuberance?