When I installed a nuc two weeks ago, there was only 1.5 frames or so with active bees, no capped brood really, and poor stores of nectar. The first week didn’t yield much change, however the second week saw major changes with a VERY active queen, LOTS of capped brood and carpets of bees covering 3.5 of the 4 originally installed frames. They haven’t touched the empty frames that were added at the time I installed the nuc.
I have the entrance currently reduced to about 2". When should I open it up?