Macaws feed on seeds, berries, nuts and some types of plants and sometimes small amounts of meat. They can be fed nuts such as almonds, walnuts, macadamias and filberts as well as beans, pastas, sweet potatoes and brown rice.
Macaws need a varied and balanced diet in order to remain healthy. They eat foods such as berries, nuts, and seeds in the wild. In captivity, they may also eat scrambled eggs, crackers and pasta. You can find more information here: http://www.parrottimes.com/diet.html
Macaws eat a variety of food! They eat: bananas, apples, papaya, mango, nuts, seeds, flowers, green beans, dried fruits, pasta, crackers, fresh vegetables, and bread.