Nicobar long-tailed macaque a defined captive breeding programme were deficient. Nicobar long-tailed macaque The Nicobar long-tailed macaque ("Macaca fascicularis umbrosa", popularly known as the Nicobar monkey) is a subspecies of the crab-eating macaque ("M. fascicularis"), endemic to the Nicobar Islands in the Bay of Bengal. This primate is found on three of the Nicobar Islands—Great Nicobar, Little Nicobar and Katchal—in biome regions consisting of tropical and subtropical moist broadleaf forests. The Nicobar long-tailed macaque has brownish to grey fur, with lighter colouration on its undersides. Its face is pinkish-brown, with white colour spots on its eyelids. Infants are born with a dark natal
Crab-eating macaque durians such as "Durio graveolens" and "D. zibethinus", and are a major seed disperor for the latter species. Although the species is ecologically well-adapted and poses no threat to population stability of prey species in its native range, in areas where the crab-eating macaque is not native, it can pose a substantial threat to biodiversity. Some believe the crab-eating macaque is responsible for the extinction of forest birds by threatening critical breeding areas as well as eating the eggs and chicks of endangered forest birds. The crab-eating macaque can become a synanthrope, living off human resources. They are known to