I am newer to all medium hives and 8 frame hives in the last 10 years only. So.....we found this year at a marginal site, that has done better than I expected early on, an unusual scenario. Because of good eucalyptus bloom and properly timed mite treatment, the two hives were full of bees brood and honey. But normally I find the bees have moved up and away from the bottom box over winter and prefer to store honey above the brood. But this time both of these hives had substantial honey and some brood in the bottom box and the bulk of the* brood in the two boxes above, with only some honey. So I am trying to understand what made them store so much honey in the bottom? Anyone have experience with this happening? The hives do have slatted racks.