A mosquito weighs 2.5 milligrams. It also has almost exactly the same hovering power to weight ratio. At 8mm high it is indeed a very tiny "drone", and exceedin

A mosquito weighs 2.5 milligrams. It also has almost exactly the same hovering power to weight ratio. At 8mm high it is indeed a very tiny "drone", and exceedingly fragile, but it is certainly not impossible.