About Brookesia superciliaris (Kuhl, 1820)
Commonly called the brown leaf chameleon, Brookesia superciliaris is distinguished by a prominent forehead, a laterally compressed body that resembles a curled dead leaf, and characteristic facial features. The size and appearance of this chameleon varies considerably across its wide range, and individuals may be any shade of brown, beige, grey, olive, green, or dark red, but usually display colors and patterns that mimic a dead leaf. Despite its very small size, the brown leaf chameleon has a striking appearance due to two distinct horns that protrude from the head above each eye, and four spiny scales that jut from the throat. The brown leaf chameleon is found in eastern Madagascar, including the island of Nosy Boraha, ranging from sea level up to elevations of over 1,250 metres (4,100 ft). It prefers the floor of evergreen primary forest, but may also occur in secondary forest and adjacent overgrown plantations. It favors closed-canopy forest, and climbs higher in the forest (up to 1.5 m (4.9 ft)) more often than other species in the genus Brookesia. The brown leaf chameleon spends its days foraging among dead leaves on the forest floor, searching for prey with its independently moving, protruding eyes and catching insects with its long, sticky tongue. If threatened, the lizard’s first response is to remain still and rely on its effective camouflage, but it may also use other defensive behaviors. One of these is the 'freeze-and-roll' technique: the chameleon folds its legs underneath its belly, rolls over to one side and remains very still, mimicking a dead leaf on the forest floor. Alternatively, the brown leaf chameleon may thrust its spines to ward off predators. Brown leaf chameleons have a distinct courtship ritual, in which a male approaches a female with marked nodding and rocking movements. An unreceptive female repels the male with jerky movements, while a receptive female walks with the male. After some time walking together, and before dusk, the male mounts the female and is carried on her back until the pair mates in the late evening or at night. This species is known to be capable of storing sperm. Between 30 and 45 days after copulation, the female lays two to five eggs, which she hides under dead leaves, moss, and pieces of bark on the forest floor. Sometimes, the female excavates a proper nest and lays the clutch on the ground. The eggs hatch after 59 to 70 days, and brown leaf chameleons reach sexual maturity within one year.
