Many beekeepers assume that bearding in hot weather has to do with inadequate ventilation. But I have noticed that on hot, humid evenings with the heaviest bearding, the bees often cover all but 3-4 inches of the Langstroth entrance, thus closing ventilation space down to a gap they can control.
Is it possible that the lesser outside bearding on a screened-bottom hive is due to the bees concentrating their efforts on blocking that screen from the inside?
Eugene Makovec
Foley, Missouri
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