I installed a slatted rack ubove my 4 brood boxes back in August in hopes that it would act as an excluder under my subsequently installed honey supers. When I inspected that hive several weeks ago I observed capped brood and larva in the upper supers as well as below. At that time I had never seen the queen in that colony.
Yesterday I inspected the hive and found a healthy active queen in the upper super (lower ofn the 2) as well as even more brood. I attempted to inspect the lower 4 boxes but the bees were going crazy, extremely hostile, so I suspended my efforts. Hope to try again next week when the weather is a bit more accomodating.
Could there be a queen below too? I did glimpse full frames of brood in the uppermost brood box but it looked older, darker. Could the one queen simply bee traversing the slatted rack?