I checked one of my strongest hives (one deep, 4 supers), and found 7 old open queen cells, but also not a single cell of capped no brood.
The bees are bringing in nectar, but I also noticed a few bees that were bringing in pollen. I suspect that they swarmed about one month ago (based on the very dark brown color of the queen cells). The question is this: if some bees bring in pollen, does this imply that there is a (virgin) queen around? What do you know? Thanks a lot, Stavros