🗃️ Poor hive ventilation

Some beehives have poor ventilation. Bees during winter die because of this ❄️ Overwintering collapse

Basically its not the -30 degrees that kills the bees, its the humidity that gets accumulated in the hive that makes it hard for them to warm themselves.

Bad ventilation typically happens because

• hive does not have an exit / hole way on top of the hive
• top frames have plastic cover that does not allow for any air to go through

Bad ventilation in turn causes mold/fungi to appear, which is bad for bee health

source - https://www.honeybeesuite.com/physics-for-beekeepers-mold-in-a-beehive/