A cave could be home to bats, rats, shrimp, corals, and crickets. But some caves are home to birds. One species of birds that live in caves are cabak oil.
- Oil Cabak sleep during the day and foraging at night. The bird was rather like a bat. Also a case of bats, cabak oil has a special kind of radar. These birds squeaking, squawking, and uncover. The sound is bounced back to the ear so that the oil cabak know if there are objects that stand in his way. This is why the birds were able to fly in a dark cave or at night without knock something.