Small birds are typically defined as avian species that weigh less than a few ounces and measure less than a foot in length. Common examples include sparrows, finches, and wrens. These birds are often found in various habitats, including gardens, forests, and urban areas. Their small size allows them to easily navigate through dense vegetation and find food. Many small birds are known for their vibrant colors and melodious songs. They primarily feed on seeds, insects, and fruits, playing a crucial role in their ecosystems by aiding in pollination and seed dispersal. Small birds are also important indicators of environmental health, as their populations can reflect changes in habitat quality.