Why do bees buzz?

            The buzzing sound made by the bees is due to the rapid beating of their wings. The rapid beating of the wings creates ripples in the air which produces the sound. All insects fly by beating their wings. But some insects, like the butterfly whose wings beat slowly- 6 to 10 times every second do not produce a buzzing sound. Other insects such as the mosquitoes with very small wings produce very little sound which can be heard only when it is close to our ears. However, the wings of bees are large and they beat very fast – 300 to 40 times every second. This produces the buzzing sound that is clearly audible.