Purina Wild Bird Chow Regional Recipe™ 40lb Catalog Wild Bird Purina Wild Bird Chow Regional Recipe™ 40lb Manufacturer : Purina Animal Nutrition LLC. SKU : PM-48320 Model Number : 804273016597 Description Formerly known as Basic Mix or Bird Chow. Available in 25lb, 40lb and 50lb bags. Rates Please contact us for current pricing and availability.