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Bird food is food (often varieties of seeds) eaten by birds. The most important use of bird feed globally, is as feed for domesticated poultry. However (especially in developed countries), people also make or buy bird food to feed to pet birds or use in birdfeeders for wild birds. Birdfood can be natural or commercial. The choice of what to use as birdfood depends on the species of bird being fed. Bird food can also potentially attract rodents.
Black sunflower seeds are highly recommended for use in bird feeders because they attract a wide variety of birds, have a high ratio of meat to shell, and are high in fat content. Other common birdseeds include Niger, or thistle seed, a favorite of goldfinches, millet for sparrows and juncos, and safflower for cardinals, among others.
Since there are various birds that do not eat seeds, several other types of food have traditionally been used. Suet (beef or mutton fat) is recommended for insect-eating birds like nuthatches and woodpeckers. Nectar (essentially sugar water) attracts hummingbirds. Bread and kitchen scraps are often fed to ducks and gulls. Chickens are commonly fed maize, wheat, barley, sorghum and milling by-products, in a mixture traditionally called chicken scratch.
Commercial bird food
A wide variety of commercial bird food is available to bird owners, combining a variety of seeds in a single mix. Individual types of bird tend to pick out their favorite seeds and leave the rest uneaten, to be picked up by other birds.
Farmed birds fed commercial bird food typically are given very specific scientifically designed preblended feed. Examples of commercial bird food for chickens include chick starter medicated crumbles, chick grower crumbles, egg layer mash, egg layer pellet, egg layer crumbles, egg producer pellet, and broiler maker med crumbles.[clarification needed] Pellet crumbles are often prepared for tiny chicks. Mash is more finely ground.