Black-headed uakari
The golden-backed uakari (Cacajao melanocephalus ) or black-headed uakari, is a New World primate from the family Pitheciidae. It lives in the Amazon Rainforest, and is found in the countries of Brazil, Colombia, and Venezuela. It has black hair covering its body, except for a reddish abdomen, tail, and upper limbs, and a bald face. It has highly specialised teeth which allow it to eat seeds and fruits with hard shells. The name golden-backed uakari is a neotype proposed by Boubli et al. (2008).
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DiurnalDiurnal animals are active during the daytime, with a period of sleeping or other inactivity at night. The timing of activity by an animal depends ...
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FrugivoreA frugivore is an animal that thrives mostly on raw fruits or succulent fruit-like produce of plants such as roots, shoots, nuts, and seeds. Approx...
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GranivoreSeed predation, often referred to as granivory, is a type of plant-animal interaction in which granivores (seed predators) feed on the seeds of pla...
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HerbivoreA herbivore is an animal anatomically and physiologically adapted to eating plant material, for example, foliage, for the main component of its die...
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ArborealArboreal locomotion is the locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some anima...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Among animals, viviparity is the development of the embryo inside the body of the parent. The term 'viviparity' and its adjective form 'viviparous'...
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Not a migrantAnimals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
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starts withThe golden-backed uakari is characterized by a black haired head, black hairless facial skin, black lower limbs and hands, black soles on hands and feet, and a reddish hued flank, tail, and upper limbs. They are noted for having a particularly short and non-prehensile tail and highly specialized teeth.
Sexual dimorphism is present, with females being slightly smaller than the males, having a mass generally less than 3 kg compared to an overall species' mass ranging from 2.5 to 3.7 kg.
It is native to north-western Brazil, south-eastern Colombia and south-western Venezuela, living in the Amazon Rainforest, especially in the seasonally flooded forests called igapos. No boundaries have been identified between the habitats of the three subspecies. Uakaris are known to travel several kilometers with the changing season in pursuit of certain fruits. Black-headed uakaris have been sighted in varying habitats apart from the igapos, including terra firme, palm swamps, low open white sand forests, rain forests, and campinarana.
They typically live in groups of 5-40 individuals, but occasionally more than 100 may come together. Individuals within a subgroup exist in close proximity and interact frequently. The uakari are diurnal. They move around by walking and running on all fours and even climbing and galloping. Leaping is the main method of travel, allowing them to cover a distance of 10 meters in one leap. Swimming is done only when required, as when they accidentally fall into the water.
Newborn infants range from 25% to 67% of the mother's body length. After birth, the infants follow the mother for a year and a half, being carried on her back or front side.
These uakaris mainly feed on seeds and fruits, but will also eat leaves, pith and insects. They have large canines that allow them to feed on seeds from fruits with hard shells and incisors that are able to shatter the husk for access to the inner seeds. They are also known to consume fruits from many different species of trees. Overall, there is little competition with other primates for food, as most living in the same habitat do not devour hard fruits, however some competition with birds exist. Leaves are also consumed, especially when fruits are low during the dry season. Another dietary form observed is insectivory, peaking when fruit availability is low, through the consumption of fruit infested with insects or through the deliberate hunting of insects for protein. Uakaris have been seen raiding wasp nests for larvae and even eating the eggs of river turtles.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...