@Slashvi 4 May 2022 more from that month

WHY do insects buzz? In most cases, they have no specific organs for this; the buzzing, heard only during flight, comes simply from the fact that, while flying, insects flap their wings several hundred times per second. A wingbeat is an oscillating plate, and we know that any oscillating plate, sufficiently often, produces a tone of a certain pitch. Scientists have determined that a housefly, for example, makes 352 wing strokes per second, a bumblebee 220, a bee 440, and a mosquito 550. For comparison, the propeller of an airplane makes on average about 25 revolutions per second.