Harrison's High Potency Coarse 1lb Maximum Nutritional Formula for Medium to Large Birds Year-round formula for all medium to large parrots, especially African greys, cockatoos, large conures, eclectus, macaws and pionus. Other species may be switched to Adult Lifetime Formula after a 6 month conversion period. Premium, whole, certified organic, formulated diet for pet birds No preservatives, artificial colors, sweeteners for flavors USDA NOP Organic Seal ensures the highest quality, chemical-free products for your bird