According to the web site cockatiel.com, it is important that you provide your bird with variety in its diet. The bird will "tell" you what it likes and dislikes by the foods it chooses to eat. The cockatiel will eat seeds, but the web site recommends that you include pellet bird food along with seeds for variety. You can also serve fruits and vegetables to your cockatiel, but you need to chop or shred them into small pieces.
Again according to cockatiel.com, here is a list of fruits and vegetables that are appropriate to feed to your bird:
- sprouts, spinach, turnip greens, Swiss chard, mustard greens, broccoli, escarole, chicory, tomatoes, beet greens, bok choy, grated carrots, collard greens, corn, endive, kale, cooked yams, cooked pumpkin, cooked sweet potato, mangos, cantaloupe, apricots, nectarines, papayas, peaches, apples, bananas, grapes, oranges.
You can even feed your cockatiel small amounts of chicken, fish, beef, hard boiled or scrambled eggs, yogurt, and cottage cheese.
Refer to cockatiel.com for more information.