A powerful digger, the greater bilby makes spiral-shaped burrows up to three metres long and almost two metres deep. The reason they are so deep is to keep them safe from predators, and also to keep them at a constant temperature of 23 degrees Celsius. The bilby stays in its burrow during the day, looking for food well after dark. A bilby may have up to a dozen burrows—some for sleeping in and the others for escaping into. When returning to the burrow after a night of foraging, the bilby back-fills the burrow to prevent predators from entering. The burrow contains no nesting material and the entrance is often against a termite mound or small shrub.