author(s)
Tekameren I Jamir, S Sen and Hemant Kumar

abstract
The study was carried out from the month of January to April 2018 at the Intanki National park, Peren, Nagaland, India. The study recorded 5 species of primates namely, Hanuman Langur Semnopithecus entellus, Rhesus Macaque Macaca mulatta, Capped Langur Trachypithecus pileatus, Stumped tail Macaque Macaca arctoides and Hoolock Gibbons Hoolock leuconedys, with a population of 212 individuals in total. Hanuman Langurs having population size of 69 individuals had the highest number of individuals of all the primates in the Intanki National Park whereas Hoolock Gibbons had the lowest number of population with 30 individuals. The sex ratio was also calculated for all the primates in total which showed 29:40 i.e. 29 males to 40 femalesThe Behaviors of the primates showed that total 50% of the days were used by stumped tailed Macaques for their feeding which was the most percentage of days used by any primates for feeding, the study also indicated that Hoolock Gibbons having no more than 2 males and two females per troops indicating mating pairs which is not seen in any primates species residing in Intanki National park. Lastly the status compared with the IUCN Criteria’s of List showed that all five species of primates in Intanki National park to be Critically Endangered in Intanki National park.