White-headed Capuchin

The White-headed Capuchin also known as the White-faced Capuchin or White-throated Capuchin, is a medium-sized New World monkey of the family Cebidae, subfamily Cebinae. Native to the forests of Central America and the extreme north-western portion of South America, the White-headed Capuchin is important to rainforest ecology for its role in dispersing seeds and pollen.
Among the best known monkeys, the White-headed Capuchin is recognized as the typical companion to the organ grinder. In recent years the species has become popular in North American media. It is a highly intelligent monkey and has been trained to assist paraplegic persons. It is a medium-sized monkey, weighing up to 3.9 kg (8.6 lb). It is mostly black, but with a pink face and white on much of the front part of the body, giving it its common name. It has a distinctive prehensile tail that is often carried coiled up and is used to help support the monkey when it is feeding beneath a branch.
In the wild, the White-headed Capuchin is versatile, living in many different types of forest, and eating many different types of food, including fruit, other plant material, invertebrates, and small vertebrates. It lives in troops that can exceed 20 animals and include both males and females. It is noted for its tool use, including rubbing plants over its fur in an apparent use of herbal medicine, and also using tools as weapons and for getting to food. It is a long-lived monkey, with a maximum recorded age of over 54 years.


Like other monkeys in the genus Cebus, the White-headed Capuchin is named after the order of Capuchin friars – the cowls worn by these friars closely resemble the monkey's head coloration. The White-headed Capuchin has mostly black fur, with white to yellowish fur on the neck, throat, chest, shoulders, and upper arms. The face is pink. A V-shaped area of black fur on the crown of the head is distinctive. It has a prehensile tail that is often held coiled, giving the White-headed Capuchin the nickname "ringtail".
Adults reach a length of between 335 and 453 mm (13.2 and 17.8 in), excluding tail, and a weight of up to 3.9 kg (8.6 lb). The tail is longer than the body, at up to 551 mm (21.7 in) in length. Males are about 27% larger than females. The brain of a White-headed Capuchin is about 79.2 g (2.79 oz), which is larger than that of several larger monkey species, such as the Mantled Howler.

Distribution and habitat

It is found in many different types of forest, including mature and secondary forests, and including evergreen and deciduous forests, dry and moist forests, and mangrove and montane forests. However, it appears to prefer primary or advanced secondary forests. Also, higher densities of White-headed Capuchins are found in older areas of forest and in areas containing evergreen forest, as well as areas with more water availability during the dry season.


The White-headed Capuchin is a diurnal and arboreal animal. However, it does come down to the ground more often than many other New World monkeys. It moves primarily by walking on all four limbs. It lives in troops, or groups, of up to 39 monkeys (mean 16, range 4-39) and have male/female adult sex ratios of .71 on average (range .54-.88) With rare exception, females spend their entire lives with their female kin . Males migrate to new social groups multiple times during the course of their lifetimes, migrating for the first time between 20 months and 11 years of age. The median age of migration in the Santa Rosa population is 4.5 years. Males sometimes migrate alone, but more often they migrate in the company of other males who are often their kin. One of the unusual features of the kinship structure of the White-headed Capuchin, relative to other primate species, is the high degree of relatedness within groups that results from the long tenures of alpha males who sire most of the offspring. Alpha males have been known to keep their positions as long as 17 years in this species and this puts them in the unusual position of being available to sire the offspring of their daughters and granddaughters, who produce their first offspring at about 6-7 years of age. Typically, however, alpha males do not breed with their own daughters, even though they do sire virtually all offspring produced by females unrelated to them .Those subordinate males who are allies of the alpha male in group defense are the males who sire the offspring of the alpha male’s daughters. The high degree to which alpha males monopolize matings results in an unusually large number of paternal half-siblings and full siblings in this species relative to other primate species
Kinship is an important organizing factor in the structuring of female-female social relationships. Particularly in larger groups, females preferentially associate with, groom, and provide coalitionary support to their matrilineally related female kin. They do not exhibit a similar preference for their paternal half sisters, which may mean that they only are capable of recognizing kinship through the maternal line . Dominance rank is also an important organizing factor, with females more often grooming and associating with females who are closer to them in the dominance hierarchy. Female-female dyads groom far more than male-female and male-male dyads. Coalitionary aggression is common both among males and females, and capuchins seem to have an excellent understanding of the alliance structure in their group. For example, when capuchins are fighting, they sensibly recruit aid from someone who is both higher ranking than they are and also better friends with themselves than with their opponent.
Female capuchins have linear dominance hierarchies. In contrast to many Old World monkeys such as macaques, in which females socially inherit the rank just below their mothers and just above their next oldest sisters, capuchins do not have a highly predictable ranking within their matrilines. Males are typically dominant to females. The alpha male is always easy to discern, but there are sometimes ambiguous rankings among subordinate males. Male-male relationships are tense, and affiliation between males is typically expressed by resting in contact, playing, or non-conceptive sex rather than by grooming. Males cooperate in coalitions against potential predators, and also in defense of the group against other males. Occasionally male coalitionary aggression becomes so violent that males are killed, particularly if they are encountered roaming the forest unaccompanied by allies.Because aggression from other male capuchins is the leading cause of death (aside from poaching by humans, where there is contact between humans and capuchins), male allies are critical for self-defense during migration, and to assist in taking over other groups . Male emigration to a new troop typically occurs about every 4 years, so most males are in constant danger of having to defend themselves against other groups of males. It is often the case that immigrating males kill young infants when they take over a group Females band together to defend their infants from infanticidal males, but they rarely succeed in saving their infants Because infants inhibit their mothers from ovulating by nursing frequently, males are able to bring females into estrus earlier by killing the infants and thereby terminating nursing; this has the effect of increasing their breeding opportunities. Females do often mate with the killers of their infants, and with time, they typically become as supportive of the new alpha male as they had been of the previous one. The alpha male helps defend females from subordinate males within the group as well as from infanticidal males from other groups.

Interactions between groups

White-faced capuchin troops occupy home ranges of between 32 and 86 hectares (79 and 210 acres). They travel between 1 and 3 kilometres (0.62 and 1.9 mi) daily, averaging 2 kilometres (1.2 mi) per day. Although they engage in activity that has been described as "territorial", more recent research indicates that white-faced capuchin troops tend to behave aggressively to other white-faced capuchin troops regardless of where they meet, and the aggression is not necessarily intended to exclude the other troops from a specific home range.
Home ranges overlap extensively, so groups are not territorial in the strictest sense of the word. Perhaps because of the intensity of male-male competition and the threat of infanticide, interactions between groups are typically hostile: the males display aggressively toward one another and sometimes engage in physical aggression (even killing an opponent), while females grab their infants and run. Typically, males are the primary participants in aggressive intergroup encounters, and it seems likely that males are defending access to the females in their groups. Alpha males, who have the largest reproductive stake in the group, participate at a higher rate than subordinate males. Groups with more males have an advantage over groups with fewer males, but the location of the encounter within the home range matters as well; smaller groups defeat larger groups when the contest occurs in the core or center area of the smaller group’s home range.


The White-headed Capuchin is an omnivore. Its primary foods are fruit and insects. It forages at all levels of the forest, and also forages on the ground. Methods for finding food include stripping bark off of trees, searching through leaf litter, breaking dead tree branches, rolling over rocks, and using stones as anvils to crack hard fruits. Its prehensile tail assists with feeding, helping support the monkey when foraging for food below the branches.
Fruit can make up between 50% and 67% or more of the capuchin's diet. In one study in Panama, White-headed Capuchins ate 95 different fruit species. Among its favorite fruits are figs from the family Moraceae, mangos and related fruits from the family Anacardiaceae, the bean-like fruits from the family Leguminosae and fruits from the family Rubiaceae. It generally only eats ripe fruit, testing for ripeness by smelling, tasting and prodding the fruit. It typically eats only the pulp and juice, spitting out the seeds and fibers. Other plant matter eaten includes flowers, young leaves, seeds of certain plants, and bromeliads. It also uses the bromelids as a water source, drinking the water that gets trapped inside.
Insect prey eaten includes beetle larvae, butterfly and moth caterpillars, ants, wasps, and ant and wasp larvae. It also eats larger prey, such as birds, bird eggs, frogs, lizards, crabs, mollusks and small mammals. The population in Guanacaste, Costa Rica in particular is noted for hunting squirrels, magpies, White-crowned Parrots and baby coatis. The amount of vertebrate prey eaten varies by troop. Even neighboring troops can show significant differences in their diets.
The diet can vary between the rainy and dry season. For example, in Guanacaste, Costa Rica the White-headed Capuchin can eat a wide variety of fruits as well as caterpillars in the early rainy season (June to November). But during the dry season, only figs and a few other types of fruit are available. During the dry season, chitinous insects, ant and wasp larvae and vertebrates become a particularly important part of the White-headed Capuchin's diet. Access to water can also become an issue during the dry season. The White-headed Capuchin likes to drink daily, so in forests where water holes dry up during the dry season, there can be competition between troops over access to the remaining water holes.


The White-headed Capuchin uses a polygamous mating system in which a male may mate with multiple females. Although the dominant male does not monopolize breeding, studies have shown that the dominant male does tend to father most of the young. Although a female may mate with several males, the dominant male may be more likely to copulate when the female is at peak fertility. Nonetheless, there is evidence that dominant males do tend to avoid breeding with their own daughters who are members of the troop. Such avoidance is rare among New World primates.

Copulation takes about 2 minutes, and the gestation period is 5 to 6 months. Usually a single young is born, but twins occur occasionally. Most births occur during the dry season from December to April. The infant is carried across its mother's back for about 6 weeks. After about 4 to 5 weeks it can stray from its mother for brief periods and by about 3 months it can move around independently, although some infants will be mostly independent earlier. Weaning occurs between 6 and 12 months. While the mother rests, the young spends most of its time foraging or playing, either on its own or with other juveniles. Capuchins engage in high levels of alloparenting, in which monkeys other than the mother help care for the infant. Infants are carried by alloparents most often between 4 and 6 weeks in age. Males as well as females engage in alloparenting.
Like other capuchin species, the White-headed Capuchin matures slowly. Sexual maturity can be reached at 3 years. But on average, females give birth for the first time at 7 years old and give birth every 26 months thereafter. Males attain reproductive maturity at 10 years old. The White-headed Capuchin has a long life span given its size. The maximum recorded life span in captivity is over 54 years.

Conservation status

The White-headed Capuchin is regarded as "least concern" from a conservation standpoint by IUCN. However, its numbers are impacted by the fact that it is sometimes captured for the pet trade. Its status can also be harmed by deforestation. However, deforestation may also impact its main predator, the Harpy Eagle, more than it directly impacts the White-headed Capuchin, and so on a net basis deforestation may not be as harmful to the capuchin's status. The White-headed Capuchin can adapt to forest fragmentation better than other species due to its ability to live in a wide variety of forest types and exploit a wide variety of food sources. The White-headed Capuchin is important to its ecosystems as a seed and pollen disperser. It also impacts the ecosystem by eating insects that act as pests to certain trees, by pruning certain trees, such as Gustavia superba and Bursera simaruba, causing them generate more branches and possibly additional fruit, and by accelerating germination of certain seeds when they pass through the capuchin's digestive tract. In addition, the White-headed Capuchin sometimes kills Acacia collinsii plants when it rips through the plant's branches to get to resident ant colonies.

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Tufted Capuchin

The Tufted Capuchin, also known as Brown Capuchin or Black-capped Capuchin is a New World primate from South America. As traditionally defined, it is one of the most widespread primates in the Neotropics, but it has recently been recommended considering the Black-striped, Black and Golden-bellied Capuchins as separate species, thereby effectively limiting the Tufted Capuchin to the Amazon Basin and nearby regions.



Physical characteristics


The Tufted Capuchin has a head-body length of 32 to 57 cm, a tail length of 38 to 56 cm, and a weight of 1.9 to 4.8 kg, with the males generally being larger and heavier than the females.

Distribution and habitat





As opposed to some other capuchins, a group of Tufted Capuchins has no fixed territory. Different groups are often encountered in the same area.



The Tufted Capuchin rubs urine on its hands and feet in order to attract mates and reduce stress.


A well-known characteristic of this species is that it uses stones as a tool to open hard nuts. First it lays the nut on a large, flat stone, after which it hammers with a smaller stone until the nut is opened. Besides nuts, it also eats fruit, insects, larvae, eggs, young birds, frogs, lizards, and even bats. They are also known to chase cats. The Tufted Capuchin looks for its food in groups. As soon as one of the group members has found something edible, he or she may make a large whistling sound, dependent upon the proximity of other individuals and abundance of the food resource, so that the other monkeys know that there is something to eat. The composition of the group is very well-organized, and is determined by rank in the hierarchy. The dominant male often resides somewhere in the middle of the group just behind the front line, so that it is safer when a predator attacks. The vanguard is composed of higher-ranked females who are tolerated by the dominant male. They have the privilege to reach the food first, but they are also the most vulnerable when a predator attacks.

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Golden Bellied Capuchin

The Golden-bellied Capuchin also known as the Yellow-breasted or Buffy-headed Capuchin, is one of several species of New World monkeys.

Although there are differences between individuals as well as between the sexes and across age groups, C. xanthosternos is described as having a distinctive yellow to golden red chest, belly and upper arms. Its face is a light brown and its cap for which the capuchins were first named is a dark brown/black or light brown. Formerly thought to be a subspecies of Tufted Capuchin (C. apella), it was elevated to the status of species. Despite this previous classification, C. xanthosternos does not have very evident tufts, as they are oriented towards the rear of the skull and are hardly noticeable. A band of short hair around the upper part of the face with speckled colouring contrasts with the darker surrounding areas. The limbs and tail are also darkly coloured.

Populations of C. xanthosternos are restricted to the Atlantic forest of south-eastern Bahia, Brazil, due possibly to high degrees of interference from man. Historically they probably would have inhabited the entire area east of, and north to, the Rio São Francisco.

Only 301 individuals survive, the last one was born on 07/21/2009.
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Black Capuchin

The Black Capuchin, Cebus nigritus, also known as the Black-horned Capuchin, is a capuchin monkey from the Atlantic Forest in south-eastern Brazil and far north-eastern Argentina. It has traditionally been included as a subspecies of the Tufted Capuchin.


The Black Capuchin has three subspecies: Cebus n. nigritus (nominate) and C. n. cucullatus are found in the southern part (the former eastwards, and the latter westwards) of this species' range, and both have a distinctive pair of tufts on the crown, as also suggested by the alternative common name of this species; Black-horned Capuchin. The last subspecies, the Robust Tufted Capuchin (C. n. robustus) is found in the northern part of this species range, and has a median conical crest on the crown.


The Black Capuchin's population number is unknown, but thought to be declining. This is due mostly to habitat loss, hunting, and the pet trade.

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Weeper Capuchin

The Weeper Capuchin is a capuchin monkey from South America. It is found in northern Brazil, Guyana, French Guiana, Suriname, Venezuela and possibly northern Colombia.

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