Finally, there’s a nutritionally complete food for cockatiels packed with the tastes and textures these popular pet birds crave. Tropical Fruit Nutri-Berries for Cockatiels combine whole seeds, grains, and 26% pellets with pieces of real pineapple, papaya, and mango together in berry-shaped pieces sized right for cockatiels, as well as quaker parrots, Indian ring-necks, lovebirds, and others.