30-5-2019 THORNTREE CAMP, ZAMBIA - VERVET MONKEY (Chlorocebus pygerythrus)

https://www.inaturalist.org/taxa/68137-Chlorocebus-pygerythrus

20-5-2019 BUMI HILLS, ZIMBABWE - VERVET MONKEY (Chlorocebus pygerythrus)

https://www.inaturalist.org/taxa/68137-Chlorocebus-pygerythrus

 

30-5-2019 THORNTREE CAMP, ZAMBIA - VERVET MONKEY (Chlorocebus pygerythrus)

25-5-2019 MANA POOLS , ZIMBABWE - VERVET MONKEY (Chlorocebus pygerythrus)

21-5-2019 BUMI HILLS, ZIMBABWE - VERVET MONKEY (Chlorocebus pygerythrus)

20-5-2019 BUMI HILLS, ZIMBABWE - VERVET MONKEY (Chlorocebus pygerythrus)

20-4-2018 OKAVANGO DELTA, BOTSWANA - VERVET MONKEY (Chlorocebus pygerythrus)

The Vervet monkey (Chlorocebus pygerythrus) is an Old World monkey native to Africa. The term "vervet" is also used to refer to all the members of the genus Chlorocebus. These adorable monkeys live in social groups and involve their communication and alarm calls, specifically in regard to kin and group recognition, and particular predator sightings.

The Vervet monkey is of medium to large size and has a black-tipped tail which is often longer than its body. Its fur is olive or gray, lighter on the underside. Its hands and feet are black, as are its ears and face. Its face has a white band above it, framed with white cheek tufts. Its arms and legs are long, about the same length as each other, to enable the monkey to walk with ease on all fours while on the ground, and this actually makes it quite speedy when running. The males tend to be bigger than the females.

8-4-2018 THORNYBUSH LODGE, SOUTH AFRICA - VERVET MONKEY (Chlorocebus pygerythrus)

16-4-2018 CHOBE NATIONAL PARK, BOTSWANA - VERVET MONKEY (Chlorocebus pygerythrus) COURTESY OF MRS VALERIE FISHER

18-4-2018 CHOBE NAT PARK, BOTSWANA - VERVET MONKEY (Chlorocebus pygerythrus)

20-4-2018 OKAVANGO DELTA, BOTSWANA - VERVET MONKEY (Chlorocebus pygerythrus)

The Vervet monkey (Chlorocebus pygerythrus) is an Old World monkey native to Africa. The term "vervet" is also used to refer to all the members of the genus Chlorocebus. These adorable monkeys live in social groups and involve their communication and alarm calls, specifically in regard to kin and group recognition, and particular predator sightings.

The Vervet monkey is of medium to large size and has a black-tipped tail which is often longer than its body. Its fur is olive or gray, lighter on the underside. Its hands and feet are black, as are its ears and face. Its face has a white band above it, framed with white cheek tufts. Its arms and legs are long, about the same length as each other, to enable the monkey to walk with ease on all fours while on the ground, and this actually makes it quite speedy when running. The males tend to be bigger than the females.

Vervet monkeys live south of the Sahara and across Eastern Africa. They are also found in western and southern Africa from Ghana to Uganda. They inhabit savanna, forests, and woodlands that tend to be near water; their favorite spot is acacia forests lining rivers and lakes.

Vervets are arboreal monkeys, spending most of their time in the trees where they feel safe. Although these monkeys do venture to the ground looking for food and water, they rarely go far from the trees, which serve as protection from predators. These animals are diurnal and spend their days foraging, and then rest at night. They are very sociable animals, forming troops of between 10 and 50. The troops are made up of adult females with their young, while males wander between different troops both to socialize and mate. Females remain in their groups throughout life. Separate dominance hierarchies are found for each sex. Male hierarchies are determined by age, tenure in the group, fighting abilities, and allies, while female hierarchies are dependent on maternal social status. A large proportion of interactions occurs between individuals that are similarly ranked and closely related. Vervet monkeys have four confirmed predators: leopards, eagles, pythons, and baboons. The sighting of each predator elicits an acoustically distinct alarm call. As infants, vervets learn to make a variety of calls from observation alone, without explicit tutelage. Vervet monkeys are thought to have up to 30 different alarm calls. In the wild, they have been seen giving a different call when seeing a human being approaching. Mothers can recognize their offspring by a scream alone.

Vervet monkeys are omnivorous and consume plant matter as well as other animals. Young shoots and leaves comprise most of their diet, as well as tree bark, fruits and flowers, and fruits from the surrounding trees. On the ground, they forage for roots, bulbs, grasses, and seeds, and sometimes supplement their diet with, eggs, rodents, insects, birds, and various small animals.

Vervet monkeys are polygynous, with females typically having few mates during their lifetime, while some males will have numerous mates. From about five years old they are able to reproduce. The mating season is between April and June. The gestation period is about five and a half months, and a single infant is born, whereupon it is cleaned by the mother. The baby clings to the mother’s stomach for about the first week. Vervet monkey babies soon develop strong social connections with other monkeys and begin to interact and play with them by as young as a month old. They suckle until nearly 4 months of age when they begin eating softer vegetation but are not weaned fully until about a year old.

27-12-2015 SAIGON, VIETNAM - VERVET MONKEY (Chlorocebus pygerythrus)

The vervet monkey (Chlorocebus pygerythrus), or simply vervet, is an Old World monkey of the family Cercopithecidae native to Africa. The term "vervet" is also used to refer to all the members of the genus Chlorocebus. The five distinct subspecies can be found mostly throughout Southern Africa, as well as some of the eastern countries. These mostly herbivorous monkeys have black faces and grey body hair color, ranging in body length from about 40 cm (16 in) for females, to about 50 cm (20 in) for males.

In addition to behavioral research on natural populations, vervet monkeys serve as a nonhuman primate model for understanding genetic and social behaviors of humans. They have been noted for having human-like characteristics, such as hypertension, anxiety, and social and dependent alcohol use. Vervets live in social groups ranging from 10 to 70 individuals, with males moving to other groups at the time of sexual maturity. Studies done on vervet monkeys involve their communication and alarm calls, specifically in regard to kin and group recognition, and particular predator sightings.

The vervet monkey ranges throughout much of Southern and East Africa, being found from Ethiopia and extreme southern South Sudan all the way down to South Africa. It is not found west of the East African Rift or the Luangwa River, where it is replaced by the closely related malbrouck (C. cynosuros) species. The vervet monkey inhabits savanna, riverine woodland, coastal forest, and mountains up to 4000 m (13,100 ft). They are adaptable and able to persist in secondary and/or highly fragmented vegetation, including cultivated areas, and sometimes are found living in both rural and urban environments. Annual home range size has been observed to be as high as 176 ha, with an average population density of 54.68 animals/km².

Vervet monkeys that are naturalised (introduced by humans) are found in Cape Verde, Ascension Island, Saint Helena, St Kitts and Nevis, and Barbados. Dania Beach, Florida, is home to about 40 introduced vervets.

10-11-1993 MOUNTAIN LODGE, KENYA - VERVET MONKEY (Chlorocebus pygerythrus)

The vervet monkey (Chlorocebus pygerythrus), or simply vervet, is an Old World monkey of the family Cercopithecidae native to Africa. The term "vervet" is also used to refer to all the members of the genus Chlorocebus. The five distinct subspecies can be found mostly throughout Southern Africa, as well as some of the eastern countries. These mostly herbivorous monkeys have black faces and grey body hair color, ranging in body length from about 40 cm (16 in) for females, to about 50 cm (20 in) for males.

In addition to behavioral research on natural populations, vervet monkeys serve as a nonhuman primate model for understanding genetic and social behaviors of humans. They have been noted for having human-like characteristics, such as hypertension, anxiety, and social and dependent alcohol use. Vervets live in social groups ranging from 10 to 70 individuals, with males moving to other groups at the time of sexual maturity. Studies done on vervet monkeys involve their communication and alarm calls, specifically in regard to kin and group recognition, and particular predator sightings.

The vervet monkey ranges throughout much of Southern and East Africa, being found from Ethiopia and extreme southern South Sudan all the way down to South Africa. It is not found west of the East African Rift or the Luangwa River, where it is replaced by the closely related malbrouck (C. cynosuros) species. The vervet monkey inhabits savanna, riverine woodland, coastal forest, and mountains up to 4000 m (13,100 ft). They are adaptable and able to persist in secondary and/or highly fragmented vegetation, including cultivated areas, and sometimes are found living in both rural and urban environments. Annual home range size has been observed to be as high as 176 ha, with an average population density of 54.68 animals/km2.

Vervet monkeys that are naturalised (introduced by humans) are found in Cape Verde, Ascension Island, Saint Helena, St Kitts and Nevis, and Barbados. Dania Beach, Florida, is home to about 40 introduced vervets.

The vervet monkey very much resembles a gray langur, having a black face with a white fringe of hair, while its overall hair color is mostly grizzled-grey. The species exhibits sexual dimorphism; the males are larger in weight and body length and may be recognized by a turquoise-blue scrotum. Adult males weigh between 3.9 and 8.0 kg (8.6 and 17.6 lb), averaging 5.5 kg (12 lb), and have a body length between 420 and 600 mm (17 and 24 in), averaging 490 mm (19 in) from the top of the head to the base of the tail. Adult females weigh between 3.4 and 5.3 kg (7.5 and 11.7 lb) and average 4.1 kg (9.0 lb), and measure between 300 and 495 mm (11.8 and 19.5 in), averaging 426 mm (16.8 in).

When males reach sexual maturity, they move to a neighboring group. Often, males move with a brother or peer, presumably for protection against aggression by males and females of the resident group. Groups that had previously transferred males show significantly less aggression upon the arrival of another male. In almost every case, males migrate to adjacent groups. This obviously increases benefits in regard to distance traveled, but also reduces the amount of genetic variance, increasing the likelihood of inbreeding.

Females remain in their groups throughout life. Separate dominance hierarchies are found for each sex. Male hierarchies are determined by age, tenure in the group, fighting abilities, and allies, while female hierarchies are dependent on maternal social status. A large proportion of interactions occurs between individuals that are similarly ranked and closely related. Between unrelated individuals, female competition exists for grooming members of high-ranking families, presumably to gain more access to resources. These observations suggest individual recognition is possible and enables discrimination of genetic relatedness and social status. Interactions between different groups are variable, ranging from highly aggressive to friendly. Furthermore, individuals seem to be able to recognise cross-group vocalisations, and identify from and to which monkey each call is intended, even if the call is made by a subadult male, which is likely to transfer groups. This suggests the members within a group are actively monitoring the activity of other groups, including the movement of individuals within a group.

Within groups, aggression is directed primarily at individuals that are lower on the hierarchy. Once an individual is three years or older, it is considerably more likely to be involved in conflict. Conflict often arises when one group member shows aggression toward a close relative of another. Further, both males and females may redirect aggression towards individuals in which both had close relatives that were previously involved in a conflict. This suggests complex recognition not only of individuals, but also of associations between individuals. This does not suggest recognition of other's individual kinship bonds is possible, but rather that discrimination of social relationships does occur.

8-1984 MOUNTAIN LODGE, KENYA - VERVET MONKEY (Chlorocebus pygerythrus)