Guianan Squirrel Monkey
Squirrel monkeys are highly sociable primates that thrive in large groups called troops. These troops can range from 40 to as many as 300 individuals, depending on space and food availability. However, they don’t always stay together as one unit. Instead, they split into smaller subgroups based on age and sex. They are incredibly agile, using their long tails for balance as they navigate the trees with remarkable speed and precision. Although their tails are not prehensile, they help them maintain stability as they leap across branches – sometimes covering distances of up to 2 metres! Communication is essential within these large groups, and squirrel monkeys use a mix of vocalisations, facial expressions, body postures, and even scent marking. One of their unique behaviours includes urinating on their hands and feet to mark territory and to regulate body temperature, track group members, and groom themselves.
Diet
Squirrel monkeys are omnivores. Their diet consists mainly of fruits, seeds, young leaves, flowers, and nectar. However, they will also hunt insects, spiders, and small vertebrates like lizards, bats, and bird eggs when the opportunity arises. When fruit is scarce, they rely more on leaves and seeds for sustenance.
FUN FACT
Despite their small size, squirrel monkeys have the largest brain-to-body ratio of any primate. Their brains are proportionally twice as large as a human’s, which contributes to their high intelligence and keen problem-solving abilities. They also have excellent eyesight, allowing them to detect ripe fruits even among dense vegetation.
LIFE SPAN
25 years.
HABITAT
Squirrel monkeys are native to the tropical rainforests of South America, particularly in French Guiana, Guyana, Suriname, and Brazil. They occupy a variety of forest types, preferring the food-rich and well-protected middle canopy but occasionally venturing to the forest floor and upper canopy. At night, they sleep in groups, huddling together on branches with their tails wrapped around their bodies for warmth and security.
