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Bees Beard to Beat the Heat
One of our guests pointed to our honeybees clustered on the outside of the hive and said it looked like a “beard”. They wondered why the bees would do this. We have an answer!
“Bearding” is the term which refers to bees accumulating at the front of the hive. They appear calm and fan their wings in unison. They are likely to do this on hot and humid days. By clustering outside they provide more space inside the hive to keep the temperature and humidity within acceptable ranges. Raising brood requires temperatures between 90 and 97 degrees F. They remove their own body heat from the hive to lower the temperature. They also use their wings to push cooler air into the entrance, lowering the temperature even more. The proper humidity is necessary for nectar to evaporate and become honey.
Bee keepers sometimes confuse bearding bees with those getting ready to swarm. But if it is a hot and humid day, chances are good that they are merely bearding. Bearding bees also face the same direction as they fan. This helps cool down the temperature of the hive.
Healthy Bees Beard
According to Kelley Bees http://www.kelleybees.com/blog Bearding is a sign of a strong bee colony that is in good health. It is an indication that the hive contains a good number of bees and that they are preparing for winter by keeping the honey at the correct temperature.
Bees may beard for weeks during the hottest part of the summer. The workers are very skilled at temperature control. Worker bees may also spread water on the rims of cells to set up cooling by evaporation. They can create air currents by fanning their wings. And they adjust the temperature by expanding and contracting the size of the cluster.
We help the bees by providing a source of fresh, clean water. A hive of bees can use as much as a liter of water in a day! We also have painted the hives white so that the sunlight will be reflected, not absorbed.
We are fascinated by our honey bees and are glad that our guests are interested as well!
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