Selecting a Breeds of Chickens - A breed of chicken is a family of birds that have the same general size, shape and carriage. All birds in this family will share the same characteristics, i.e. skin color, plumage style, number of toes. Breeds of chickens are divided into classes. Large fowl classes generally refer to their place of origin i.e. American, Asiatic, English, Mediterranean, and other. Bantam breeds are classified by characteristics, i.e. Game, comb style, leg feathering.
You might select a breed of chicken based on what you need. There are egg laying breed, meat producing breeds, and dual purpose breeds.