Macadamias are highly nutritious nuts. They have the highest amount of beneficial monosaturated fats of any nut. They also contain 9% protein, 9% carbohydrate, 2% dietary fibre, calcium, phosphorus, potassium, sodium, selenium, iron, thiamine, riboflavin and niacin.
Macadamia nuts form the staple diet of the Hyacinth Macaw in captivity. These large parrots are one of the few animals, aside from humans, capable of cracking and shelling the nut.