Hi All

Im a new beek, and installed my bees 3 weeks ago from a 4 frame nuc, had a quick check last week and they have filled half a frame with comb and seem very busy collecting, but what I have noticed is that around 4:30pm most days, there is a fairly large group of bees flying around the hive or gathering on the hive, around the entrance.

Is this just young bees testing out their wings or possibly a swarm getting ready to split the hive? They all seem to fly about for 5-10 minutes and then head back in for the night?

Any ideas?