Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Great Bent-Winged Bat (Miniopterus tristis) is a species of vesper bat in the Vespertilionidae family. It can be found in the following countries: Indonesia, Papua New Guinea, Philippines, Solomon Islands, and Vanuatu. Bats are flying mammals in the order Chiroptera. The forelimbs of bats are webbed and developed as wings, making them the only mammals naturally capable of true and sustained flight. By contrast, other mammals said to fly, such as flying squirrels, gliding possums and colugos, glide rather than fly, and can only glide for short distances.