I've a large busy colony that expanded into a second brood box this summer with 2 supers above. A recent inspection revealed both supers still had plenty of uncapped honey and the top brood box was full of sealed honey, except for the middle 3 frames which had empty centres. Any advice for winter? This was not what I'd expected to find!
Elaine, This is not untypical behaviour in the autumn. As the bees in the top brood box hatch out and the queen is laying at a slower rate the bees fill up the hatched out cells in the top box with honey. I guess that they do this to keep the stores near the brood in the bottom box.