Explaining Nature on Instagram: "Owl wingtip vortices are small spirals of air that form at the edges of an owl’s wings as it flies, but unlike other birds, owls have special adaptations that make these vortices much quieter. Normally, when air flows over a bird’s wings, it creates turbulence and noise — especially at the wingtips, where high-pressure air from below the wing meets low-pressure air from above. Owls have unique feather structures that reduce this noise. The leading edges of their