The primary diet of a seed-eater typically consists of seeds from various plants, grains, and nuts. These birds have specialized beaks adapted for cracking open seed coats, enabling them to access the nutritious contents within. For example, finches, sparrows, and doves primarily feed on seeds. In addition to seeds, they may occasionally consume small fruits or insects, particularly during breeding season when protein is necessary for growth. Diet composition can vary depending on the availability of food sources in their habitats, but seeds remain the staple for most seed-eating birds.