We conducted a status survey of the Northern Pig-tailed Macaque Macaca leonina at Satchari National Park in northeastern Bangladesh from January 2017 to March 2018.The ‘Complete Count’ method was used to determine population size.Potential threats to the macaques were identified through direct observations and questionnaire surveys of the local people.The population comprised 117 individuals (±13) from three multimalemultifemale groups and six solitary adult males.The group density was 1.2 groups/km2,and the group size ranged from 27 to 48 individuals (mean 37±10.5).The mean ratio of adults to non-adults was 1:1.2,and the adult male to female ratio was 1:1.Macaca leonina was observed to forage and sleep in the roadside oil palm plantation adjacent to the forest.Habitat loss,fragmentation,roadkill,and electrocution were recorded as threats to macaque survival,and other human activities were identified as potential stressors.Thus,we recommend strictly following the existing management plan (2016-25),monitoring the population,placing speed breakers for vehicles,using insulator-coated power lines and strengthening the capacity of forest departmental staff to conserve M.leonina at Satchari National Park.
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