Finally got my reversals done about a week ago all queens were in the top box as usual for this time of year , I know its late but the weather here has been crazy and now i see weather coming with night time lows below freezing , my question is once I get the queen and any brood with her down to the bottom can they keep the brood warm enough , I always feel like i should put a buffer on the bottom like a box with empty drawn comb so there not right on the same level as the bottom entrance any ideas .