ok, it does not belong in this tread but i don't want to open a new one.
you all (or at least a few) know i have different hives. one chamber on top of the other. usually all people have the lower used for brood chamber and so, the entrance is on the bottom of the hive. for winter i divided the chambers so bees can not acces the upper chamber. the upper chamber also has an entrance, just above the lower chamber. so what i want to know is, would it be better if i closed the lower entrance and let them to use the upper one. i wnat to know, because i'm not really sure how it would affect the bees-reorintating. opening a BIG space-possible cold air leaking during winter, i mean, the warm air would go into the upper chamber and out-logicly. i'll add the pics so you'll have a better image of the whole situation.
the contrast colours indicate where entrances are, they use the lower one currently
in the middle there's a queen excludor also. i would open it just a bit, so maybe an inch wide passage would be opened. actually my biggest consern is about bees having to reorintate, but on the other hand it's very close.