The lesser mouse-tailed bat feeds primarily on insects, which are caught in flight. Its flight is rather unique amongst bats as it initially flutters its wings and then partially glides (2). Like most bats, the lesser mouse-tailed bat uses echolocation to locate prey and avoid obstacles, allowing it to fly in complete darkness. The ultrasound calls, which are emitted through the nostrils (4), consist of long, high frequency chirps (of around 32 kilohertz) (5). Feeding as much as possible during the summer months, the lesser mouse-tailed bat builds up fat in its abdominal region in preparation for the winter, when food is scarce. During the winter season, the lesser mouse-tailed bat enters a period of dormancy (hibernation) and lives off its fat reserves (2).
After awakening from its winter dormancy in late February, the lesser mouse-tailed bat enters its breeding season, which lasts until the middle of April (6). The gestation period lasts from 95 to 100 days, after which the female gives birth to a single young in June or July (6).
The lesser mouse-tailed bat is well adapted to its arid habitat. The slit-shaped nostrils can be closed to keep out dust and sand and it is able to survive without a source of fresh water, as it obtains most of the water it requires from its food. The kidneys are also able to produce highly concentrated urine, in order to conserve precious water (7).