Bees regulate temperature in the following ways:
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Heating: When the temperature inside the hive is too low, bees cluster together to generate heat. During winter, bees form clusters inside the hive and consume stored honey to produce heat, tightly clustering more in lower temperatures, which leads to greater food consumption. In fact, strong colonies with ample honey stores can withstand temperatures as low as -20°C.
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Cooling: If the hive temperature becomes too high, bees collect water to cool the hive. For instance, during hot summer and fall seasons, bees gather water from nearby sources to lower the temperature inside the hive. Additionally, worker bees fan their wings at the hive entrance to regulate internal temperatures. Bees often build hives in locations that are naturally cooler in summer and warmer in winter, sheltered from wind and rain.
In summary, bees have mechanisms to regulate hive temperature. They cluster for warmth and use stored honey for heat production when it's too cold, and gather water and fan their wings to cool the hive when it's too hot. However, their ability to regulate temperature is not limitless, and stronger colonies have better temperature control capabilities.