Jack Sparrow - Captain Jack Sparrow! That's how he looks in the parallel universe. Our Sparrow cursor features a small, common brown bird you can find in many parts of the world. Despite being common, sparrows are still an essential part of many ecosystems. They help to control insect populations, pollinate plants, and provide food for larger predators. They communicate with each other using a variety of sounds, including chirps, tweets, and trills. Some species of sparrows are known for their elaborate courtship displays, which can involve singing, flapping wings, and dancing.