Red Broilers were developed by introducing the red gene to a typical Cornish Rock Cross. Because both red and white plumage genes are recessive, the first generation of the cross produced offspring with some red, but predominantly white. As the following generations of this cross continued, the offspring became redder until only red offspring were produced. Red Broiler chicks are various shades of red. They have single combs and clean, yellow legs and feet. Adults have primarily red plumage and are characterized by their large legs and feet and deep bodies. Although they grow rapidly, they can't be expected to grow as quickly or as large as a typical Cornish Rock.