Q rearing by numbers

[prakel]

with one BKF poster saying that his winter losses were the same as larger hives.

I think he attributed that, at least in part, to having young queens in the boxes which (combined with the nice dimensions of the unit) is probably about the mark. But yes they're very easy and economical to overwinter.

They're also a nice box to keep queens in while they're on the grafting rota.