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Silvered leaf monkey with baby

Short video of a silvered leaf monkey with baby in Bako National Park in Sarawak (Borneo), Malaysia. DISTRIBUTION and HABITAT: The silvered leaf monkey is also known as the silvery lutung or the silvery langur and is found across Borneo and Sumatra, as well as in parts of the south-western Malay peninsula, the Natuna Islands, and other nearby islands. It inhabits mangrove swamps and nearby forest regions, and generally avoids travelling far from coasts or rivers. DIET: The silvery lutung is a specialist folivore, including a higher proportion of leaves in its diet than any other colobine monkey. Although it does also eat fruit, and some seeds and flowers, these comprise only 9% of the diet. PREDATORS: Local predators able to feed on silvery lutungs include leopards, tigers, dholes, and some large snakes. Binturongs, and various other small carnivores are probably able to feed on infants. DISEASES: Silvery lutungs are unusually susceptible to human diseases, including AIDS, and have therefore been widely used in medical research. BEHAVIOUR: Silvery lutungs are diurnal, and travel in groups of around 9-40 individuals with one adult male and many adult females communally caring for infants. They rarely leave the trees, which provide them protection from ground-dwelling predators. Each group occupies a home range of 20 to 43 hectares (49 to 106 acres), although these may overlap with those of neighbouring groups. During the day, individuals may travel up to 500 metres (1,600 ft) through the forest. The entire group shelters in a single tree at night. The social structure of silvery lutungs is matrilineal and harem based. Females remain in the group for life, while males leave shortly after reaching adulthood, living in small groups of their own until they can take over an established harem. Within the group, males dominate the females, and females with young dominate those without. However, there is relatively little aggression within the group compared with some related species. The adult male protects his group and territory from competing males, communicating his dominance to other males via vocalizations and fighting. Although less vocal than other closely related species, silvery lutungs make at least thirteen different vocalisations, with the most common being used by adult males defending their territory. Other vocalisations express fear, anger, excitement, and satisfaction, in addition to various calls made by infants. Silvery lutungs breed year-round, with no clear breeding season, although each female typically gives birth no more than once every 18 to 24 months. The female gives birth to a single young after a gestation period of 181 to 200 days. The young weigh about 400 grams (14 oz), measure about 20 centimetres (7.9 in) and are well developed, with a strong grip for holding onto the mother. Silvery lutungs are born with orange fur and with white hairless skin on the face, hands, and feet. The skin rapidly changes to the dark adult colour, but the fur does not reach the adult pattern for three to five months after birth. The young are cared for by females communally. Females first give birth at 35 months of age. Silvery lutungs have lived up to 31 years in captivity. CONSERVATION STATUS: The silvery lutung is classed as vulnerable by the IUCN and is listed in Appendix II of CITES. Its habitat is heavily threatened throughout its range by logging and the development of oil plantations. The species is also threatened by hunting for meat and by capture for the pet trade. Source: Wikipedia - https://en.wikipedia.org/wiki/Silvery... Filmed in Bako National Park - https://sarawaktourism.com/attraction... Music: Cambodian Odyssey by Kevin MacLeod Available in the YouTube audio library    / youtubeaudiolibrarydownload