I live in a hot location where its always in the 100s and I keep a ventilation rim on my warre hive and its got shade almost throughout the entire day. I sometimes have a few bees fanning the entrance (less than 4) but I've never seen them bearding during the day. I like to check up on the hive at night and look into the hive windows to see the hive's night activities, its really cool. The odd thing is that I do see a lot of bees bearding the hive entrance, complete bearding and sometimes I'll see bees stacked upon bees in a big cluster. The bees do not fan though, theyre just laying around. I have an empty box on the bottom of the hive that hasn't been being built on, if theres enough bees that they'll occupy themselves on the entrance of the hive because there isn't space for them inside the hive, why aren't they building room for themselves in the empty box?