Many captive monkeys are not fed bananas at all because they tend to be high in both calories and sugars. Others get one a day or only get them as special treats. Many wild monkeys live in areas where bananas are rare or nonexistent, so they eat very few bananas.
Even when monkeys live in areas where bananas grow wild, the bulk of their diets consists of leafy greens, seeds and nuts. Therefore, the amount of bananas a monkey eats in one day varies by the size of the monkey and the accessibility of the bananas. Although monkeys do enjoy the taste of bananas, they do not usually make up a significant portion of a monkey's diet.