Diet is an important factor influencing the survival and evolution of all species. Many studies have shown that when species evolve from being a predator or insectivore to being a vegetarian, the rate at which new species arise increases. But a new study published in Ecology Letters reveals that omnivorous New World noctilionoid bats, those species with diets including both plant and animal materials, produce more generations in the long run than specialized vegetarian or insectivorous species.