【趣谈英语】猫头鹰飞行的时候没有声音-Owls Fly Silently

Most birds make noise when they fly. They create turbulence as their wings touch the air. Owls, however, fly silently. These birds of prey have wide wings and small bodies. They don’t need to flap very much. An owl’s velvety feathers also contribute to the silence. The air passes easily through their soft wings without creating a sound. Silent flight allows owls to sneak up on their prey. Velvety feathers do have one drawback. They aren’t waterproof⁷. In a rainstorm, owls have difficulty staying warm and finding food to eat.