Re: Theory About Upper Entrance in Winter
I don't use top entrances, other than to choc the boxes a bit on really strong hives in summer.
But C10250, I don't think a beekeeper from another country, using different bees, in a different climate, can tell you your bees are eating too much. In fact, just that they assume they can, shows a lack of understanding on their part.
Generally I would consider 30 lbs for winter not too bad, but it depends how you define winter. Is any brood raising period included? If we are talking carniolan bees, through their broodless period only, food consumption would be much lower than 30 lbs. But if we define winter as the period from when they are prepared by us for winter, until the first spring nectar starts coming in, so they have already been raising brood for quite a time before nectar starts, and they are italian bees, food consumption could be well over 30 lbs.
There is anecdotal evidence that bees on mesh bottom boards consume more honey in winter than bees on solid bottom boards, presumably needing more fuel to keep warm. So if a top entrance causes more cold air to circulate, that could have the same effect. Would it reduce condensation? I don't think that's been proved at this time.
44 years, been commercial, outfits up to 4000 hives, now 120 hives and 200 nucs as a hobby, selling bees. T (mostly).