As well, they jump from branch to branch for prey or to escape predation. When threatened, Green Crested Lizards leap from one tree to next, splay out their limbs, and expand their rib cages during flight. Open surfaces are often the place where "Draco", (black bearded) gilding lizards communicate with each other. When not flying, their heads are usually seen sitting head up on the trunks of the trees; their wings creatively folded to their bodies. Most of their day is spent feeding on ants up and down trees, making for the majority of their diet. Once in a while, they will want to change outings and leap from the tree, extend their ribs to open their wings, and glide to the next tree. The degree and speed of the glide depends on a couple of aspects: the height of the lizard on the tree and the surface area of the wing comparative to the weight of the body. The orange-haired gliding lizard has a thick neck and heavy body; it has small wings however, but despite its pace, it moves relatively fast. To pick up enough speed, it commonly needs to fold down its wing for a period of time. Therefore, they are seen on the tallest trees where they can safely dive to gain momentum to glide. Their flight structure helps separate them ecologically, keeping them from direct opposition with one another for some of the rainforest's resources. In some areas of the forest, up to eight different species of "Draco" may appear together. Generally, they are closely related species with unique, restrictive life histories living in the same area, the potential for opposition is likely. Geckos are another notable gliding reptile. Their wings lack the elaborate thoracic (chest) mutation of gliding lizards and are composed mainly of a large flap of skin along their flanks. The flaps stay rolled across the belly until the lizard leaps off a tree the time they become inertly opened by air during the fall. Additionally, the body flaps are extended flaps along the sides of the head, neck, and tail; back sides of the hind limbs; and extensive webbing on the hands and feet. In flight, all of their wings are extended and splayed, creating the parachute effect. The Frilly Gecko, the smallest of them, travel from trees uniquely on the lowest part of the same tree to avoid predators. Geckos are cryptic species that are hidden during the day and active during the night, unlike the many arboreal agamids.