"Cockatiel nutriberries are a good base food for your complete diet that includes pellets (always offer colored pellets!!), millets, lots of fresh fruit, fresh veggies, and some sunflower seeds during molts and nesting. Do not feed this as an exclusive diet, no matter what the package says. Your bird cannot get a balanced diet from just one food--the more variety and the more pellets and fresh food you can get them to eat, the better.
Variety is vital, so be sure when feeding with cockatiel nutriberries to feed an equal amount of one or more other varieties--El Paso, Sunny Orchard, and Tropical Fruit are what I intermix with the regular cockatiel variety.
When buying the cockatiel, be sure to buy the 4lb size after trying one of the small containers for the first time out--just to be sure your birds like them. My birds prefer nutriberries over everything else except spray millet and sunflower seeds!"