Bees are different because they are specialized as pollination agents , with behavioral and physical modifications that make pollination easier . Bees are generally better at the task than other pollinating insects such as beetles , flies , butterflies and pollen wasps . The novelty is that bees are specialized as pollination agents , with behavioral and physical modifications that specifically enhance pollination , and are generally more efficient at the task than any other pollinating insect such as beetles , flies , butterflies and pollen wasps .