Quick answer
Sri Lanka has three commonly seen monkey species. The toque macaque, endemic to Sri Lanka, is the small reddish-brown monkey with a distinctive whorl of hair on its head, and it is the one that raids bags at temples. The purple-faced langur, also endemic, is a larger dark monkey with a pale ruff of whiskers, found in forest and increasingly in Colombo suburbs. The grey langur, or Hanuman langur, is pale with a black face and is common at Polonnaruwa. The nocturnal slender loris is rarely seen.
Key takeaways
- The toque macaque and purple-faced langur are both endemic to Sri Lanka.
- Toque macaques are the species responsible for almost all bag-raiding at temples and sites.
- Grey langurs, pale with black faces, are abundant around Polonnaruwa's ruins.
- The purple-faced langur is threatened and increasingly confined to fragmented forest.
- Never feed monkeys; it drives aggression, dependence and conflict with people.
Toque macaque: the one that takes things
The toque macaque is endemic to Sri Lanka and is the monkey you will encounter most. It is small, reddish-brown, with a distinctive whorl or cap of hair radiating from the crown, which is where the name comes from. Three subspecies occur across the dry zone, wet zone and highlands.
It is intelligent, highly social, entirely habituated to people at any site where food is available, and a practised opportunist. At Dambulla, Sigiriya, the temple sites and many hotels, macaques have learned that bags contain food and that people can be intimidated into dropping things. This is not the monkey's fault; it is the direct result of decades of feeding.
- →Endemic to Sri Lanka; small, reddish-brown, with a whorl of hair on the crown.
- →Three subspecies across the dry zone, wet zone and highlands.
- →Highly habituated at temple sites, archaeological sites and hotels.
- →Opportunistic bag raiders; the behaviour is a product of human feeding.
Purple-faced langur
The purple-faced langur is the other Sri Lankan endemic and it is a very different animal: larger, dark brown to black, with a dark face framed by pale whiskers and a long tail. It is a leaf-eater, quieter and shyer than the macaque, and it does not raid bags.
It is also in trouble. The western purple-faced langur, the subspecies found in the wet zone around Colombo, is considered one of the most threatened primates in the world, squeezed into fragmented pockets of remaining forest and increasingly living in suburban gardens and along power lines. Seeing one in a Colombo suburb is common and is a sign of habitat loss rather than abundance.
- →Endemic; larger and darker than the macaque, with pale whiskers framing the face.
- →A leaf-eater, shy and quiet; does not raid bags.
- →The western subspecies is among the most threatened primates in the world.
- →Increasingly confined to fragmented forest and suburban gardens.
Grey langur
The grey langur, also called the Hanuman langur, is the pale grey monkey with a black face and long limbs, common in the dry zone and abundant around Polonnaruwa's ruins, where a long-running research project has studied the same troops for decades.
It is sacred in Hindu tradition through its association with Hanuman, which affords it a degree of protection in some areas. Grey langurs are more terrestrial than the other species, often seen walking across open ground and lounging on ancient stonework, which makes Polonnaruwa one of the most reliable primate-watching sites in the country.
- →Pale grey with a black face and long limbs; common in the dry zone.
- →Abundant at Polonnaruwa, where troops have been studied for decades.
- →More terrestrial than other species; often seen on open ground.
- →Sacred in Hindu tradition through association with Hanuman.
The loris nobody sees
Sri Lanka also has two loris species, the red slender loris and the grey slender loris, small nocturnal primates with enormous eyes that move through the canopy with extraordinary slowness. The red slender loris is endemic and highly threatened.
Seeing one requires a guided night walk with a spotlight, usually in the wet zone forests or in specific reserves where they are known. It is a genuine highlight for anyone interested in primates, and it is entirely absent from ordinary itineraries because nobody thinks to ask.
- →Two loris species occur; the red slender loris is endemic and threatened.
- →Small, nocturnal, with very large eyes and extremely slow movement.
- →Only findable on a guided night walk with a spotlight.
- →Ask specifically; loris walks are absent from standard itineraries.
How to avoid macaque trouble
The rules are practical and they work. Do not carry food visibly, and do not eat in front of macaques. Keep bags closed and worn in front rather than on your back, where you cannot see them being opened. Take sunglasses off your head and put them away, as they are a favourite target. Do not hold a water bottle loosely in one hand.
If a macaque approaches, do not make eye contact, which is read as a challenge, and do not smile with teeth showing, which is a threat display in macaque terms. Stand up if you are sitting, which makes you larger. Do not attempt to retrieve a stolen item by force. Never feed one, even once, even a small thing.
- →Keep food out of sight; do not eat in front of macaques.
- →Bags closed and worn in front; sunglasses off your head and put away.
- →Avoid eye contact and do not show teeth; both are read as threats.
- →Stand up to appear larger; do not fight to retrieve a stolen item.
- →Never feed a monkey, in any amount, under any circumstances.
Why feeding is the whole problem
Every aggressive macaque at a Sri Lankan temple was created by someone handing over food. Feeding converts a wild forager into a dependent one, concentrates troops in unnaturally high densities around people, and produces animals that approach, snatch and eventually bite. It also spreads disease in both directions.
The end point of this is culling and translocation, which is what happens when human-monkey conflict becomes intolerable in a given place. The kindest thing you can do for a macaque is give it nothing and let it forage. Sites that have signage asking you not to feed have that signage for a reason, and the fact that others are ignoring it is not a justification.
- →Feeding creates dependence, unnaturally high densities and aggression.
- →It spreads disease between people and primates in both directions.
- →Persistent conflict ends in culling or translocation of the troop.
- →Ignore others who are feeding; the signage exists for a reason.
Where to watch primates properly
Polonnaruwa is the best single site, with habituated but wild grey langur troops living among the ruins and decades of research behind them. Sinharaja and the wet zone forests are where to look for purple-faced langurs behaving naturally rather than raiding bins. Wilpattu and Yala hold all three common species in natural settings.
Watching a troop for twenty minutes rather than photographing one for twenty seconds is the difference between seeing a monkey and seeing primate behaviour: grooming hierarchies, infant carrying, threat displays, food sharing. It costs nothing except patience and it is far more interesting.
- →Polonnaruwa: grey langurs among the ruins, extensively studied.
- →Sinharaja and wet zone forest: purple-faced langurs behaving naturally.
- →Wilpattu and Yala: all three common species in natural settings.
- →Watch a troop for twenty minutes rather than photographing one for twenty seconds.
Frequently asked questions
What monkeys live in Sri Lanka?
Three species are commonly seen: the toque macaque and the purple-faced langur, both endemic to Sri Lanka, and the grey or Hanuman langur. Two nocturnal slender loris species also occur but are rarely seen without a guided night walk with a spotlight.
Which monkey in Sri Lanka steals things?
The toque macaque, a small reddish-brown monkey with a distinctive whorl of hair on its head. It is highly habituated at temple and archaeological sites and hotels, where decades of feeding have taught it that bags contain food and people can be intimidated into dropping things.
How do you stop monkeys stealing from you in Sri Lanka?
Keep food out of sight, close bags and wear them in front rather than on your back, take sunglasses off your head, and do not hold water bottles loosely. Avoid eye contact and do not show teeth, both of which macaques read as threats, and stand up to appear larger.
What is a purple-faced langur?
A larger dark monkey endemic to Sri Lanka, with a dark face framed by pale whiskers and a long tail. It is a shy leaf-eater that does not raid bags. The western subspecies, in the wet zone around Colombo, is among the most threatened primates in the world.
Where can you see monkeys in Sri Lanka?
Polonnaruwa is the best single site, with wild grey langur troops living among the ruins and decades of research behind them. Sinharaja and wet zone forests hold purple-faced langurs, and Wilpattu and Yala have all three common species in natural settings.
Should you feed monkeys in Sri Lanka?
Never. Feeding creates dependence, concentrates troops at unnatural densities around people, and produces animals that approach, snatch and eventually bite. It spreads disease in both directions, and persistent conflict eventually results in culling or translocation of the troop.
Are there lorises in Sri Lanka?
Yes, two species: the red slender loris, which is endemic and highly threatened, and the grey slender loris. Both are small, nocturnal, with very large eyes and extremely slow movement. Seeing one requires a guided night walk with a spotlight, which must be arranged specifically.