Tyson Foods, Inc. is the world''s largest fully-integrated producer, processor and marketer of chicken and poultry-based food products. Tyson is a comprehensive supplier of value-added chicken products through food service, retail grocery stores, club stores and international distribution channels. Although its core business is chicken, in the United States Tyson is also the second largest maker of corn and flour tortillas under the Mexican Original brand and through its subsidiary Cobb Vantress, the top chicken breeding stock supplier.