Some animals make really strange sounds. One of them is the wedge-tailed shearwater. These sea birds literally sound like a kazoo. And when you get a whole flock of them vocalizing together, it's a bizarre-sounding experience.
You can read one researcher's field report from an island in the Indian Ocean where wedge-tailed shearwaters breed, complete with a recording of these "kazoo birds" in action, right here.
VIDEO: Check out this video of a researcher rescuing a wedge-tailed shearwater from a hole and hear the bird's kazoo-like vocalization.