Their large stomach comes from the need to digest the cellulose using a special bacteria. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Theories for the extensive length of their nose suggest it may be sexual selection by the females, who prefer louder vocalisations, with the size of the nose increasing the volume of the call. The nose is smaller in the female and is upturned in the young. They form a home range but do not defend it heavily. Named for the male’s long and pendulous nose, the proboscis monkey is red-brown with pale underparts. All photos used are royalty-free, and credits are included in the Alt tag of each image. Occasionally this species is known as the Malay name, monyet balanda (“dutch monkey”) or orang balanda (“Dutchman”).
, Females become sexually mature at the age of five years. Proboscis monkeys are endemic to the jungles of Borneo, never straying far from the islandâs rivers, coastal mangroves, and swamps. Proboscis monkeys have the longest noses of all primates, here’s some interesting facts about the strange-looking species of monkeys.  Occasionally, they chew their cud to allow more efficient digestion and food intake.  The population is fragmented: the largest remaining populations are found in Kalimantan; there are far fewer in Sarawak, Brunei and Sabah. Our editors will review what you’ve submitted and determine whether to revise the article. These monkeys are omnivores. Another male may then join the group and kill all the babies which belong to the other male. When fruit is plentiful in the spring, they rarely eat anything else. During the first year of its life, the infant is constantly with its mother. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Groups consist of a single male and several females, though some groups are all male. It can also be found in swamp forests, stunted swamp forests, rubber forests, rubber plantations, limestone hill forests, nypa swamps, nibongswamps, and tall swamp forests, tropical heath f…
All female members of the troop help to care for the infant.  This species is restricted to lowland habitats that may experience tides.
They are currently protected from hunting or capture in Borneo. Asia is the native home of the proboscis monkey. Proboscis monkeys typically live in close proximity to water bodies of their home range. As these habitats are rare each bit that is deforested is a massive hit to the proboscis monkey populations. It is endemic to the southeast Asian island of Borneo and is found mostly in mangrove forests and on the coastal areas of the island.
There is a special honk to reassure infants.  It can also be found in swamp forests, stunted swamp forests, rubber forests, rubber plantations, limestone hill forests, nypa swamps, nibong swamps, and tall swamp forests, tropical heath forests and steep cliffs.  Monkey groups live in overlapping home ranges, with little territoriality, in a fission-fusion society, with groups gathering at sleeping sites as night falls. Photos with Proboscis Monkey Distribution These animals are native and endemic exclusively to the island of Borneo in the southeastern Asia, where they generally live in coastal areas, covered with mangroves and swamp forests. They live in the lower elevations of the forests and around the swamplands. Flowers, seeds and insects will also be eaten. Write CSS OR LESS and hit save. They live nowhere else in the world.  One-male groups typically consist of three to 12 individuals, but can contain more. It is also … Habitat. Additionally, newborn Proboscis monkey display blue faces that turn to cream color as they grow up. By 8.5 months of age, the face has become cream coloured like the adults. They are found in the Danau Sentarum National Park where they are well protected from poachers. Only males develop the namesake nose. The nose is smaller in the female and is upturned in the young. Occasionally orangutans and long tailed macaques will force proboscis monkeys away from feeding sites. 2. This species co-exists with the Bornean orangutan. Proboscis monkeys make numerous vocalisations.
Both sexes have a pot belly and some of them have webbed toes. Geographic Distribution and Habitat Proboscis monkeys, called bekantan in Indonesia, and sometimes otherwise referred to as long-nosed monkeys, are endemic to Borneo, including all three nations that divide the island: Brunei, Indonesia, and Malaysia. Habitat and Behavior Proboscis monkeys are endemic to the jungles of Borneo, never straying far from the island’s rivers, coastal mangroves, and swamps.
Theyâve evolved webbed feet and hands to help them outpace the crocodiles that are some of their main predators. The IUCN Red List of Threatened Species 2008: e.T14352A4434312. Proboscis monkeys grow this pot belly due to their diet of low-quality leaves. The nose of a young male grows slowly until reaching adulthood.  Males of one-male groups can stay in their groups for six to eight years. Proboscis monkeys live in forests near rivers and mostly eat young leaves. They experience sexual swelling, which involves the genitals becoming pink or reddened.  One-male groups consist of 9–19 individuals, while bands can consist of as many as 60 individuals.  Copulations tend to last for half a minute. They are a highly arboreal species and will venture onto land only occasionally to search for food. In fact, monkeys in general are not good pets. When females become sexually mature their genitals will swell and become red or pink alerting males to her ability to mate. Their diet varies based on the season and availability of food.
Nonvocal displays include leaping-branch shaking, bare-teeth open mouth threats and erection in males, made in the same situations. Occasionally. Proboscis Monkey on The IUCN Red List site -, troop, barrel, cartload, tribe, wilderness, https://en.wikipedia.org/wiki/Proboscis_monkey, http://www.iucnredlist.org/details/14352/0.