Macaques are found throughout Southeast Asia and many species of macaques live successfully in areas that are heavily utilized by humans. On Bali, there are Balinese long-tailed macaque troops (populations) that live in areas where they have little to no contact with humans and troops that come into contact with humans on a regular basis. However, despite the fact that many species of macaques thrive in areas that are heavily utilized by humans, there is evidence that the viability of Balinese long-tailed macaques (the ability of macaques to continue to thrive) may be dependent upon the conservation of Bali’s forested areas.
Within long-tailed macaque societies, females are typically born into and remain with a single troop for life. In contrast, adult and sub-adult males may migrate between troops (young adult males typically leave their natal troop between the ages of 4 to 8 years). In order for a migrating adult or sub-adult male to be accepted into a new troop, migrating males must align themselves with a troops’ females and be accepted by those females. Therefore, long-tailed macaque societies or troops are made up of ‘matrilines’ (‘matri’ is a root word that means ‘mother’).