What do you feed a sparrow in captivity?

In captivity, sparrows can be fed a diet that includes high-quality birdseed mix, which should contain millet, sunflower seeds, and oats. Supplement their diet with fresh fruits and vegetables, such as Apples, berries, and leafy greens. Additionally, providing a source of protein, like mealworms or hard-boiled eggs, can be beneficial. Always ensure they have access to clean water for hydration.