 Dispersing individuals travel above ground, and are therefore vulnerable to predation from a wide range of animals; some studies have shown that only around 10 percent of dispersing individuals are later found in new colonies.For example, while small groups of siblings may sometimes leave a burrow system at the same time, normally only one survives to found a new colony.The Damaraland mole-rat is less vocal than the naked mole-rat, making only some birdlike chirps.