Tarai Gray Langur
Encyclopedia
The Tarai gray langur is an Old World monkey
Old World monkey
The Old World monkeys or Cercopithecidae are a group of primates, falling in the superfamily Cercopithecoidea in the clade Catarrhini. The Old World monkeys are native to Africa and Asia today, inhabiting a range of environments from tropical rain forest to savanna, shrubland and mountainous...

, and was formerly considered a subspecies of the northern plains gray langur
Northern Plains Gray Langur
The northern plains gray langur is a species of primate in the Cercopithecidae family. It is found in India on the lowlands north of the Godavari and Krishna rivers and south of the Ganges. It is thought to be introduced to western Bangladesh by Hindu pilgrims on the bank of the Jalangi River...

. The species is listed as Near Threatened
Near Threatened
Near Threatened is a conservation status assigned to species or lower taxa that may be considered threatened with extinction in the near future, although it does not currently qualify for the threatened status...

, as there are probably not many more than 10,000 mature individuals, and it is experiencing a continuing decline.

It is one of several Semnopithecus species named after characters from The Iliad, along with Semnopithecus ajax and Semnopithecus priam.

Distribution and habitat

Tarai gray langurs are native to Bhutan
Bhutan
Bhutan , officially the Kingdom of Bhutan, is a landlocked state in South Asia, located at the eastern end of the Himalayas and bordered to the south, east and west by the Republic of India and to the north by the People's Republic of China...

, northern India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 and Nepal
Nepal
Nepal , officially the Federal Democratic Republic of Nepal, is a landlocked sovereign state located in South Asia. It is located in the Himalayas and bordered to the north by the People's Republic of China, and to the south, east, and west by the Republic of India...

, where they inhabit the Himalayan foothills from Rajaji National Park
Rajaji National Park
Rajaji National Park is an Indian national park that encompasses the Shivaliks, near the foothills of the Himalayas. It is spread over 820 km²., and three districts of Uttarakhand: Haridwar, Dehradun and Pauri Garhwal. In 1983, three wildlife sanctuaries in the area namely, Chilla, Motichur...

 to southwestern Bhutan. They live in the moist deciduous forest of the Siwaliks, to oak forest in higher altitudes ranging from 150 to 1600 m (492.1 to 5,249.3 ft) in elevation.

Ecology and behaviour

Tarai gray langurs are arboreal, mainly terrestrial, diurnal, folivorous, and occur in multi-male multi-female groups. They have been observed feeding in orchards and crop fields outside of Rajaji National Park.
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