The term "wild birds" refers to any bird species that is not domesticated or tamed by humans. These are typically found in their natural habitats, such as forests, grasslands, wetlands, and other ecosystems around the world. They usually rely on instinct and natural behaviors to survive, including finding food, building nests, and raising young ones. Some common examples of wild birds include sparrows, robins, blue jays, hawks, owls, and many others. The phrase "wild birds" is often used in the context of birdwatching or ornithology - the scientific study of birds.