I opened up a top entrance on the two 2-weeks old bee hives. My beekeeper friend told me to wait with it, but for some reason I thought it was a good idea to open it up. However, ever since the opening 3 days ago, the top entrance is just packed with bees on both hives. See this picture:
My question is: Am I forcing them to guard an extra entrance and it’d be better to close it up again? Also, it’s been a little cooler the past few days (around 16 degree celsius). Do they sit there to prevent heat loss? The picture above I took after sunset, and I believe the cluster of bees stays at this entrance all night. Or do bees like to just hang out at such an entrance? Curiously, the bottom entrance has no such cluster, so maybe it is an insulation thing.