Black-Capped Capuchin, Sapajus apella
BLACK-CAPPED CAPUCHIN
Sapajus apella
Geographic Distribution and Habitat
Black-capped capuchins (Sapajus apella), also known as tufted capuchins, are native to South America, where they are ubiquitous throughout the Amazon River Basin. Extant populations reside in the countries of Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela. A breeding population was introduced to the Caribbean Neotropics. These monkeys reside on the northwestern peninsula (Chaguaramas) of Trinidad Island within the Republic of Trinidad and Tobago, close to the South American continent, northeast of Venezuela, and northwest of Guyana. They share the island with two endemic monkey species: the Trinidad white-fronted capuchin (Cebus trinitatis) and the Trinidad red howler monkey (Alouatta seniculus insulanus). The only other Caribbean island to host Latin American primates is Isla de Margarita, home to the Margarita Island capuchin (Sapajus apella margaritae).
A variety of forest types cover the monkeys’ vast range, including: tropical, subtropical, dry, submontane, savannah, mangrove, disturbed or secondary, and várzea (seasonally inundated) forests. Black-capped capuchins dwell in all these habitats. They have been sighted in tropical rainforests at altitudes up to 8,858 ft (2,700 m) and also in tropical lowlands and open forests. The species is most comfortable, however, within the relative safety of the dense tree canopy (particularly, the lower and middle levels), which provides shelter, sleeping quarters, food sources, and ease of travel.
The Caribbean black-capped capuchins live on habitat islands surrounded by towns, agricultural areas, and roads.
Size, Weight, and Lifespan
Black-capped capuchin males are typically larger than females, an example of sexual dimorphism in the species. Average weight for an adult male black-capped capuchin is 6.7 lb (3 kg), with a range of 3–10.5 lb (1.35–4.8 kg). Average weight for an adult female is 5.3 lb (2.4 kg) with a range of 4–7.5 lb (1.76–3.4 kg). Captive black-capped capuchins tend to be heavier than those in the wild. A more sedentary lifestyle, and perhaps a deficient diet, might explain the extra pounds. Males are toothier than their female counterparts, with canines that are 22 percent larger than those of the ladies.
Head-to-body length for males is about 17 in (44 cm) and 15 in (39 cm) for females. The monkeys’ tails nearly equal their bodies in length.
In the wild, average lifespan for this species is between 15 and 20 years. Life as a captive may extend a black-capped capuchin’s existence to nearly 50 years.
Appearance
Black-capped capuchins are sturdy Latin American monkeys who look like they might spend a lot of time at the gym—the jungle gym, of course (what were you thinking?). Their robust physique distinguishes them from the more delicate gracile capuchins in the Cebus genus. A thick rug of a fur coat (pelage) covers their powerful frame. Shoulders, upper arms, and torso are varying shades of light brown to honey mustard with intermingling strands of gray. Black fur adorns the remainder of the body, including the monkey’s long, thick tail. Hands and feet are dark brown to black.
But it’s the remarkable hairdo that gives this primate its common name of “black-capped capuchin” and secondary name of “tufted capuchin.” A black cap of coarse fur that, in some individuals, looks like a failed mohawk sits atop the crown of the head in unruly tufts that tickle the top of the ears. White fur sometimes outlines the cap, toward the face, creating a “V” boundary.
A pensive face with pale, pinkish skin is framed by long black sideburns that extend from the cap downward and get lost beneath the chin. Brown eyes assess the world from their perch above a broad, flat muzzle fitted with inquiring nostrils.
Diet
Lots of fruits, along with seeds, insects, frogs, lizards, squirrels, bats, birds, eggs, the occasional small mammal (such as the mouse opossum), carrion, and a sprinkling of stems, flowers, and leaves comprise the diet of black-capped capuchins. Nature has fitted these omnivores with a deep lower jaw and powerful jaw muscles that easily accommodate larger fruits and rough vegetation. Omnivores eat foods of both plant and animal origin. Pith from the Scheelea palm tree provides critical sustenance to the monkeys during the dry season, when food is scarce. Pit is the soft or spongy tissue of a plant or fruit, which is usually white or pale in color (e.g., the white part between the skin and fruit of an orange).
A field study from 2005 reports on, what is believed to be, an isolated incident of an infant red-bellied titi monkey (Plecturocebus moloch) falling prey to hungry black-capped capuchins. Another wildlife study published in 2008 reports on a group of black-capped capuchins feeding on a deceased adult female owl monkey (Aotus brumbacki) in a fragment of gallery forest in the Colombian Llanos. The witnessing field scientists determined that the monkeys appeared to be scavenging the owl monkey’s carcass, rather than having killed the animal. Nevertheless, they deemed the event remarkable for the capuchins’ potential to exploit potential prey of this size.
Behavior and Lifestyle
Black-capped capuchins are predominantly arboreal, moving quadrupedally by leaping and climbing through the trees. They sometimes descend to the ground for play or to cross areas of scarce vegetation; they are able to walk upright bipedally for short distances.
A semi-prehensile tail aids in grasping and stabilizing the monkeys as they climb and forage among the branches. Unlike the fully prehensile tails of spider and howler monkeys, the tail cannot independently support the monkey’s full body weight and is typically used together with the limbs for balance and support. Compared to other Latin American monkeys, the tail is less flexible and completely covered by fur.
A diurnal species (active during daylight hours), the monkeys spend most of their day, except for a midday nap, foraging and eating. Overnight, they sleep in the trees, tucked between branches.
These funny-hairdo monkeys have a reputation as noisy and destructive foragers. Their reputation is deserved. As they advance through the forest, leaping from tree to tree, they wantonly rip apart vegetation in their path. To crack open nuts, they slam the encased fruits against tree branches. With their large teeth, they tear into large fruits that have coriaceous (leathery) skins and loudly chew with assistance from their formidable jaws. In their search of vertebrate and invertebrate prey, the monkeys disrupt dead vegetation, capturing and eating the small creatures they find in these nests. They are not likely to share caught prey with members of their troop.
Whatever black-capped capuchins might lack in dining etiquette, they make up for with their impressive manual dexterity, precision, and problem-solving abilities. While other monkey species are left scratching their heads (figuratively speaking), black-capped capuchins successfully exploit tough-to-get-at food resources, deftly extracting fruits and prey.
They are master tool users and innovators. In their capable hands, long sticks become probes to extract insects from holes. Stones become multiple instruments with multiple uses: a hammer, wielded by the monkeys with precision and great force to crack open hard fruits and nuts placed upon a large flat stone serving as makeshift anvil; a hammer and chisel to break through barriers; or a shovel to dig up tubers. The monkeys use forest sponges to absorb fruit juices and syrup, and they fashion natural containers to hold their water reserves. The species’ prowess has been found only in chimpanzees (and perhaps in some exceptional human primates).
Scientists postulate that black-capped capuchins create “mental maps,” enabling them to locate nourishing foods while foraging efficiently and with optimum energy. While the monkeys’ excellent posture control, strong core, and long limbs enable them to physically perform, scientists credit the monkeys’ problem-solving capabilities to brain size. With respect to their body weight, black-capped capuchins are fitted with larger-than-expected brains.
As you might imagine, rainforests are home to a denizen of insects—biting, annoying insects if you are a mammal, like the black-capped capuchin. But these resourceful monkeys have discovered a method to repel insects and parasites. In a practice scientifically known as “anointing,” or more casually, “anting”—or “fur rubbing”—they crush acidic ants or millipedes and then rub the squashed creatures, mixed with the monkeys’ own urine, against their bodies. Mosquitoes and ticks are dissuaded by the offensive odor and seek out another warm-blooded host to feast upon. Including urine in the pungent mix may help to regulate the monkey’s body temperature, may reduce stress, and might even be a “turn on” for attracting a mate. Males are known to rub urine between their hands, on their feet, and on the tip of their tail to convey their sexual virility to females.
Capuchins are named after friars (belonging to the order of Franciscan monks) who dressed in brown robes with hoods covering their heads.
As of 2012, capuchins are divided into two genera: gracile capuchins, in the genus Cebus, and robust capuchins, in the genus Sapajus. Robust capuchins are, as the name implies, more sturdily built than gracile capuchins. Their limbs are proportionally shorter, and their canine teeth are shorter and thicker.
Black-capped capuchins are playful, curious, intelligent monkeys that live in family groups, known as troops, of about 15 to 20 individuals, though smaller groups also occur. Troops typically include one or more adult males, several adult females and their offspring, and juveniles.
Within the troop, individuals form social relationships based on age, experience, kinship, and social rank. High-ranking males often play important roles in defending the troop from predators and rival groups, while high-ranking females help maintain social stability and influence access to resources. Decisions about travel, foraging, and resting are shaped by the behavior of multiple troop members rather than by a single leader.
Higher-ranking individuals may have priority access to preferred foods and mating opportunities, but black-capped capuchin society is dynamic and cooperative. The interactions among troop members help maintain group cohesion, improve survival, and contribute to reproductive success.
As they grow into adulthood, a troop’s subordinate males usually leave their birth (natal) group in search of joining a troop where they might rise to become the high-ranking male. Females, however, spend their entire lives with their birth group.
Home ranges are between 62 and 99 acres (25–40 ha), but can be as wide as 877 acres (355 ha); typical day range for foraging is about ½ acre (2,000 m).
Social composition of a troop’s foraging expedition is well organized, determined by hierarchal rank, with the high-ranking male and female occupying the central-forward positions and other females at the front line. When a troop member discovers a food source, she alerts the other monkeys with a loud whistle. The more dominant members get first pick, while lower-ranking individuals get leftovers. To ensure they get a decent bite to eat (especially when food is scarce), subordinate monkeys have been known to “fake out” dominant monkeys by sounding an alarm call—instead of a food whistle. Hearing the alarm call, and believing that a predator is nearby, the dominant monkeys flee, leaving the lower-ranking individuals to a usurped meal.
Black-capped capuchins have been observed foraging with squirrel monkeys (genus Saimiri). It’s a cooperation that seems of more benefit to the squirrel monkeys. Because the black-capped capuchins are so enthusiastic in tearing through vegetation, squirrel monkeys are able to locate food much quicker than foraging alone. Squirrel monkeys also respond to the capuchins’ food whistles, joining the troop when a productive food source is found. They may be uninvited banquet guests.
Geographic distribution of black-capped capuchins overlaps with that of other capuchin species, including the white-fronted capuchin.
Large raptors are the natural predators of black-capped capuchins. So inherent is their fear of these birds that even when a harmless bird flies overhead, the monkeys become agitated and sound alarm calls.
Black-capped capuchin monkeys communicate with one another through vocalizations, body language, tactile methods, and olfactory cues.
Vocalizations include contact calls, calls emitted at the end of aggressive encounters, alarm calls, whistles sounded while foraging, and shrieks emitted during sexual encounters. Facial expressions, gestures, and postures convey mood or intention. Mutual grooming sessions are important in cultivating social bonds with one another. Playtime, besides being fun, teaches young capuchins social boundaries.
Some scientists conjecture that the practice of anointing, or “anting” (referring to the monkeys’ use of crushed ants as insect repellent), helps to strengthen social bonds. This conjecture may be true of other capuchin species, who practice “social anointing”—whereby the monkeys anoint one another to improve coverage of topically applied insect and anti-parasite repellants. However, black-capped capuchins rarely engage in this practice, instead sticking to individual anointing (or anting). To illuminate: individual anointing, practiced on oneself (and keeping one’s hands to oneself), targets “hard-to-see” body parts that are difficult to groom. Social anointing, practiced by multiple individuals on one another, is regarded as a mutual medication session, targeting “hard-to-reach” body parts on another.
Other scientists hypothesize that anointing creates a “group scent,” leaving important olfactory cues. But whatever cue or message the anointing capuchins intend is a mystery to scientists—unlike, for example, the cue that says, “Let’s get it on,” sent by randy males to females when the males rub their own urine on their hands, feet, and tail.
Regardless of the monkeys’ intention of their olfactory proclivities, scientists agree that black-capped capuchins possess strongly developed olfactory communication.
Females attain sexual maturity (able to conceive and bear young) between 4 to 6 years of age. Males lag behind a bit, attaining sexual maturity (able to sire young) at 7 years of age.
The species is polygamous. A troop’s females mate mostly with the high-ranking male and do their best to attract his attention, eschewing a troop’s subordinate males. If the high-ranking male is not present, subordinate males might get lucky, however.
When she comes into estrus and wishes to mate, a female calls out loudly to the male, trailing him wherever he goes. She does her best to solicit him through flirtations, raising her eyebrows and giving him an exaggerated smile. She might reach out and touch the male before quickly running away, enticing him to follow. But the male isn’t so easily snagged. He plays hard to get and ignores the aroused female, forcing her to vie for his attention with further antics (she might throw rocks at him to get his attention). Eventually, the male relents and permits the determined female to sit beside him. Soon after, the two copulate. Both partners emit vocalizations during the sex act.
Black-capped capuchins mate year-round, though most births tend to occur during the spring and summer months (the dry to early rainy seasons), when there is plenty of fruit to eat.
After a pregnancy of about 155 days, a single infant is born. Twin births are rare. A mother nurses her baby for 9 months and provides most the parental care. For the first several months of her life, a baby clings to her mother as mom travels through the forest.
Black-capped capuchins help regenerate their forest habitat by dispersing seeds (through their feces) from the great variety of fruits they eat. They also help preserve their ecosystem by eating insects that would otherwise destroy trees. Lastly, their practice of “pruning” encourages the trees where they roost to regenerate more branches that bare additional fruit.
Due to the species’ widespread geographic distribution, no immediate threats to its survival, and high reproductive potential, the black-capped capuchin is classified as Least Concern by the International Union for Conservation of Nature (IUCN, 2020), appearing on the IUCN Red List of Threatened Species. The overall population remains stable, although the species is declining in some areas of its range due to hunting and habitat loss.
Capuchin monkeys are hunted and killed for their flesh, known as “bushmeat.” Infant black-capped capuchins, left helpless when their mothers are murdered, are kidnapped to be sold as pets in the illicit wildlife trade. Increasingly, natural habitat is razed to accommodate human developments, including roadways and settlements. Coffee and eucalyptus plantations replace forests.
And while they may not be the favored capuchin for biomedical research, black-capped capuchins are also unwitting subjects, held captive in nonhuman primate laboratories. Citing the monkeys’ “anatomic and physiologic similarities and genetic homology with humans,” scientists have experimented on black-capped capuchins to study abnormal heart rhythms and cardiovascular diseases. They’ve also exploited the monkeys to study the field of dentistry.
Other captive black-capped capuchins are exploited by Hollywood, forced to become actors in movies and television shows. Capuchin monkeys—white-throated capuchins, in particular—have been forced to entertain humans in other ways: as sidekick to the “organ grinder,” an arcane human street performer; and as monkey jockeys, strapped onto the backs of greyhound dogs in the early days of greyhound racing (a dying industry that, on its own, is rife with cruelty and abuse). More recent times have seen these capuchins forced to ride sheepdogs in “monkey rodeos.”
Like other capuchin species, black-capped capuchins have been used as service animals, trained to perform simple tasks for humans with limiting physical disabilities. But in March 2011, the Americans with Disabilities Act (ADA) revised its definition for service animal. Citing animal welfare concerns, the potential for serious injury to people, and risks of transferring dangerous diseases to humans, the ADA removed nonhuman primates from its grace. Today, the ADA recognizes only dogs as service animals. It must be noted, however, that some state and local laws define “service animal” more broadly than the ADA’s definition. Adding to this legislative murkiness is the legality or illegality of keeping capuchin monkey as pets, depending on state (in the U.S.).
The black-capped capuchin is listed in Appendix II of the Convention on International Trade in Endangered Species (CITES), an international agreement between governments whose goal is to ensure that international trade in specimens of wild animals and plants does not threaten their survival.
Numerous national parks and wildlife reserves throughout the countries of the species’ vast range provide protected habitat to those monkeys who reside within the boundaries.
Neotropical Primate Conservation (NPC) is a wildlife conservation group, founded in the United Kingdom in 2007 with branches in Peru (2014) and Colombia (2016), dedicated to the conservation of primates and their habitats in South and Central America. Black-capped capuchins fall under the auspices of NPC. The group promotes conservation and protects biodiversity in the neotropics through land protection, research, improved degraded habitat for wildlife, public awareness/educational campaigns. and facilitating the livelihoods of local people by helping them to create sustainable, ecological products. Since 2007 NPC has been using primates as “flagship species” for its community conservation project.
The Wild Capuchin Foundation is a California (USA)-based nonprofit, founded in 2012, dedicated to the conservation of capuchin monkey habitat. Its main focus is on the white-faced capuchin (Cebus capucinus) (aka, white-throated) population of Lomas Barbudal, Costa Rica. The foundation is a partner to the Lomas Barbudal Monkey Project, supporting the project’s scientific, educational, and conservation work.
- Bowler, M., Messer, E., Claidière, N. et al. “Mutual medication in capuchin monkeys – Social anointing improves coverage of topically applied anti-parasite medicines.” Scientific Reports 5, 15030 (2015). https://doi.org/10.1038/srep15030
- Ramírez-Chaves HE, Carvajal-Agudelo JD, Hoyos MR, Bustamante-Manrique S, Castaño-Rivera A, Rivillas-Carmona MA, Ossa-López PA, Rivera-Páez FA (2020) “New records and confirmation of the presence of three species of primates (Mammalia, Primates) in southwestern Colombia.” Check List 16 (4): 831–839. https://doi.org/10.15560/16.4.831
- Xyomara Carretero-Pinzón, Thomas R. Defler, and Stephen F. Ferrari “Observation of Black-Capped Capuchins (Cebus apella) Feeding on an Owl Monkey (Aotus brumbacki) in the Colombian Llanos,” Neotropical Primates 15(2), 62-63, (1 August 2008). https://doi.org/10.1896/044.015.0210
- https://www.iucnredlist.org/species/172351505/172353050
- https://www.iucnredlist.org/species/43933/70611739https://www.iucnredlist.org/species/4079/70611951
- https://www.monaconatureencyclopedia.com/sapajus-apella/?lang=en
- https://en.wikipedia.org/wiki/Tufted_capuchin
- https://en.wikipedia.org/wiki/Capuchin_monkey
- https://eol.org/pages/43653308/data
- https://living-links.org/the-primates/capuchin-monkeys/https://aszk.org.au/wp-content/uploads/2020/05/Mammals.-Black-capped-Capuchin-2006JH.pdfhttps://animaldiversity.org/accounts/Cebus_apella/
- https://anthropology.ua.edu/blogs/ant312/2013/09/30/tufted-capuchins
- https://www.altinawildlife.com/black-capped-capuchin/
- https://link.springer.com/chapter/10.1007/978-1-4614-8839-2_13
- https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=945141#null
- https://neoprimate.org
- https://www.sciencedirect.com/science/article/abs/pii/S0003347200917305
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5875092
- https://pubmed.ncbi.nlm.nih.gov/23272335
- https://pubmed.ncbi.nlm.nih.gov/22328205
- https://onlinelibrary.wiley.com/doi/abs/10.1002/ajpa.24000?af=R
- https://olaw.nih.gov/sites/default/files/Capuchins.pdf
- https://caligo.com/pdf/trinidad-tobago/press/asa_wright_bellbird_newsletter-201602.pdf
- https://www.researchgate.net/publication/7958685_Predation_of_an_Infant_Titi_Monkey_Callicebus_moloch_by_a_Tufted_Capuchin_Cebus_apella
- https://www.thingsguyana.com/did-you-know-that-we-have-two-species-of-capuchin-monkeys-in-guyana
- https://wildlifewaystation.org/animals/species/monkey-capuchin
- https://www.monkeysanctuary.org/wp-content/uploads/2010/08/What-is-a-Capuchin-Monkey.pdf
- https://capuchinfoundation.org/index/
- https://www.researchgate.net/figure/Margarita-capuchins-Cebus-apella-margaritae-left-and-wedge-capped-capuchins-Cebus_fig2_240809998
- https://www.ada.gov/service_animals_2010.htm
- https://en.wikipedia.org/wiki/Greyhound_jockey
- https://www.youtube.com/watch?v=5SThn05sqJA
- https://monkeyhelpers.org/apply-monkey?gclid=CjwKCAiAsaOBBhA4EiwAo0_AnAnLJ2lbb_Q2qgpRD307fPJJK_mqxGWOAQPNJNd0zm22Xb1v4C0OMhoCvMcQAvD_BwE
- https://commons.wikimedia.org/wiki/File:Organ_grinder_with_monkey.jpg
- https://en.wikipedia.org/wiki/White-faced_capuchin
- https://www.csmonitor.com/Science/2010/1214/The-top-10-monkeys/Capuchin-monkey#:~:text=2.,Capuchin%20monkey&text=The%20white%2Dheaded%20capuchin%20is,top%20choice%20for%20organ%2Dgrinders
- https://www.theatlantic.com/health/archive/2016/08/is-it-cruel-to-have-a-monkey-helper/493970
- https://en.wikipedia.org/wiki/Crystal_the_Monkey
- https://www.britannica.com/place/Trinidad-and-Tobago
- https://www.encyclopedia.com/history/encyclopedias-almanacs-transcripts-and-maps/chaguaramas
- https://www.exoticanimalsforsale.net/capuchin-monkey-for-sale.asp
Written by Kathleen Downey (February 2021). Updated by Lina Rademacher (June 2026).