All groups of organisms undergo changes throughout their evolution. These changes do not always remain, but sometimes they increase the survival rate of the group and therefore are transmitted from generation to generation. Thus, new species originate, which are adapted to a greater or lesser extent to the environment where they develop. When these changes allow species to successfully interact with the environment, there has been an adaptive diversification. In bats, the second most diverse group of mammals, an impressive adaptive diversification has occurred in the Phyllostomidae family, which is restricted to the New World.