The drawing to the right showing part of the mosquito’s wing is what makes the buzzing or whining sound. The comb-like half, shown in blue, scrapes against the part shown in yellow, whenever the mosquito flaps its wings. (Source: “On a Possible Stridulating Organ in the Mosquito”)
Why do mosquitoes buzz in your ears? The short answer: They can’t help it. Mosquitoes’ wings make that annoying buzz or whining sound whenever they fly. When they circle your head, looking for a place to land and bite, their buzz sounds louder whenever they’re close to your ear.
Both male and female mosquitoes buzz, since they both have wings, but you probably won’t notice the whine of the males, because they don’t want to drink your blood. So they stay away from your ears, eating nectar, while the females come near to annoy you.
Scientists have discovered that the buzz of mosquitoes is more than just a way to annoy you. It’s actually important to help them find suitable mates.