Don't have as many hives as I have had, I have not seen bees bearding on the entrance since I have all DSBB unless the hive is full. When my nephew and I had 120 hives we used all commercial hives and bearding was common on hot afternoons. When I see a beard on a hive usually they are telling me that they need another box. I noticed a large beard on a swarm trap that had been there about three weeks in a 5 frame trap, no screen bottom, or screen vent hole in bottom. moved them to a 10 frame and no beard since. Since bees have a country mindset they may just like to sit on the front porch when its hot.