The proboscis monkey (Nasalis larvatus) or long-nosed monkey, known as the bekantan in Indonesian, is a reddish-brown arboreal Old World monkey that is endemic to the south-east Asian island of Borneo.
A distinctive trait of this monkey is the male's large protruding nose, from which it takes its name. The big nose is thought to be used to attract females and is a characteristic of the males, reaching up to 7 inches in length. The females also have big noses compared to other monkey species, but not as big as the males. Besides attracting mates, the nose serves as a resonating chamber, amplifying their warning calls. When the animal becomes agitated its nose swells with blood, making warning calls louder and more intense
The adult Proboscis monkey is mainly reddish-brown, with grayish limbs. According to Burnie (2001),[Full citation needed] young Proboscis monkeys have a blue face, blackish fur and a relatively normal sized nose at birth. As they grow older, fur coloration changes and the nose grows. Adult males have a large and fleshy nose which overhangs its mouth, but the female does not have a large nose in comparison to the male
The Proboscis monkey is endemic to Borneo low elevation mangrove forests, swamps, and lowland riparian forests. The Proboscis monkey's lifestyle is both arboreal and amphibious, with its mangrove swamp and riverine environment containing forest, dry land, shallow water allowing wading, and deep water requiring swimming.
The Proboscis monkey can be found almost along the Mahakam river and creeks. Especially in areas west Kutai, Proboscis monkey can very easily be found in the Beloan river, Ohong river, Kedang pahu river, Jintan river, and several other tributaries. You can observe the behavior of Proboscis monkey with close range, especially for those of you who are interested to take their photos.
Are you interested in seeing live of Proboscis monkey directly in the forest of East Kalimantan? contact me, and I have a travel package for you. Price of travel packages depending on your destination, how many days of travel, and how many participants in the package.
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