I have 2 hives, both with 2 medium size brood boxes (new packages on undrawn frames). A few weeks ago I added the second brood box too early for both hives. There are still bees in the bottom box, but it seems most of the activity has moved to the second brood box, and they are drawing that out. My question is ... when they run out of room in the top box, will they look for more room in the bottom box and fill in the 2-3 frames that remain largely empty?
Or perhaps - as I am writing I'm getting a thought - I need to move the empty frames from the bottom box up to the second box, swapping for drawn (outside) frames from the top box?
Or perhaps - as I am writing I'm getting a thought - I need to move the empty frames from the bottom box up to the second box, swapping for drawn (outside) frames from the top box?