They may be served raw or lightly steamed to retain their nutrients. The key to good nutrition is offering your birds a wide variety of foods. Vegetables supply nearly all of the vitamins and minerals required for good health and should be a large part of a healthy bird's diet. Fruits also contain a wide range of nutrients that can relieve stress. Like many vegetables, fruits are excellent sources of vitamin C and bioflavonoids, especially berries, melons and citrus fruits.
Some fruits are rich in calcium, magnesium and potassium.
These include raisins, bananas and blackberries. All fruits contain appreciable amounts of potassium. Potatoes, sweet potatoes and yams are all good sources of A, B, and C vitamins, and also provide an additional easily digested source of protein. Included with a variety of other fresh vegetables, starches can help to reduce stress. Legumes and peas are excellent sources of calcium, magnesium, potassium and B-complex vitamins, which are all known to be stress reducers.