The big free-tailed bat has long, narrow, tapering wings. The length and shape of the wings give it speed and enable it to fly long distances, but its flight is not as maneuverable as that of bats with shorter, broader wings. Learn more about the Nyctinomops macrotis, more commonly known as a Big Free-tailed Bat, in this easy-to-read species overview by the Smithsonian's National Museum of Natural History.