They are unusual in that the whole order is camouflaged. They are all mimics of their natural background. Some species (such as "O. macklotti" and "Palophus centaurus") are covered in mossy or lichenous outgrowths that supplement their disguise. Some species can change color as their surroundings shift ("B. scabrinota", "T. californica"). Many species have a rocking motion, where the body sways from side to side, like leaves or twigs swaying in the breeze. The nocturnal feeding habits of adults also helps them to hide from predators.