At least 22 species of New World leaf-nosed bats are known to build distinct structures that modify living leaves into shelters. By making precise cuts around major leaf veins, they make a variety of shelters, including ones that look like umbrellas and tents. While little is known about this behavior, a team of National Geographic Explorers is studying the creatures to learn how they evolved—and the role bats play in rainforest ecosystems. Explore what researchers are uncovering about tent-maki