Objects moving fast through air causes friction which creates the sound you're hearing. Move your hand as fast as you can past one of your ears, and you will hear the same type of sound, albeit much lower in volume.
Los veo y me emociona 🥲 verlos hermoso y a la vez riesgoso, disfrutar junto a la NATURALEZA es bellísimo 😍😍😍😍 que Dios los proteja y los cuidé❤️❤️❤️❤️❤️