Sometimes, snow gets whipped around to the front, and blocks their little entrance. Here, I'm using my finger to open their entrance, in order for them to come out for a "cleansing flight". When it warms up a bit, the bees will take short flights in order to "poop". They don't potty inside their house.
Notice how the snow is whipped around the hive by the wind. This is an indicator, which tells me how much wind really hits the hives. Amazingly, they're all still alive in the center of this box!! The bees don't heat the entire box inside. They simply huddle closely together, called a Cluster, and vibrate in order to keep each other warm. A few bees that remain on the oustide of the cluster will die. But not many.
Notice the heavy brick on top of the lid. Sometimes, I've had winds so strong that the lid has been flipped off by the wind. And of course my cows like to rub on corners of the lid. A little weight helps to avoid such troubles.
It's all about protecting them from harsh, cold winds!
There's almost a 40 degree temperature difference from the inside of the hive to the outside. You would be amazed at how much HEAT honey bees can produce. It took me a few years to really understand, that these bees will be very much alive come early April. No worries!!