The proper combination is really what makes the different between whether your birds experience disease, maintenance health or optimum health. While fresh fruits contain a high water content, they are excellent sources of natural sugar and provide energy and carbohydrates. Fruits contain little protein and are low in fat. They do provide fiber and many minerals, such as potassium, calcium, magnesium, phosphorus, and iron. They also contain vitamins A, C and trace amounts of B complex.
Fresh fruits contain more nutrition than canned or frozen fruits.
Prolonged storage and heat destroy the vitamin C content. Once sliced or chopped a fruit's vitamin C content rapidly diminishes. Most vegetables are rich in vitamins A and C, potassium and fiber. Some vegetables provide appreciable amounts of B-complex vitamins, calcium, magnesium, iron, protein and carbohydrates. If vegetables are exposed to heat they generally lose much of their nutritional value.