In my tbh i noticed today that a large fraction of the bees (roughly half) was clumping on the outside near the entrance. I am not sure if this is sign of a swarm or just bearding. It was very hot here today, so I am hoping they were just outside to cool off. In terms of space, the hive was about a third filled with comb, a third open, and a third behind the follower board. There were plenty a bees still inside the hive. I expanded the space by putting the follower board all the way at the end. Only two entrance holes are open, so maybe it just to hot inside.
Any thoughts or help on what is going on and what to do?