RESPONSIBLE TOURISM & ECO-TOURISM IN RWANDA, UGANDA, & THE DEMOCRATIC REPUBLIC OF THE CONGO

More Fun Facts About Gorillas

December 8, 2024 |
An image of a troop of gorillas.
Step into the world of Amahoro Tours, where every journey is a close encounter with Africa’s most extraordinary wildlife. Today, we turn our attention to gorillas, revealing fascinating insights and little-known facts about these majestic creatures that make each eco-tour adventure truly remarkable. While our treks in Rwanda, Uganda, and the Congo offer unparalleled opportunities to witness these majestic mammals in their natural habitat, this post is all about diving into their fascinating world. Discover some surprising and delightful facts about gorillas, and if their charm inspires you, perhaps it’s time to start planning your own encounter with them!

The Troop (Or Band)’s All Here

You know how groups of animals have specific names — a pod of whales, a murder of crows, a flock of sheep? Well, there is a special name for gorillas too. In fact, they have two names for a group of gorillas, band or troop. 

When it comes to a troop or band of gorillas, there is a consistent structure you’ll find each time. Each troop or band will consist of a dominant male. There will be only one male per troop or band. Then, the rest of the troop will be made up of females and infants. Oh yeah, baby gorillas are called infants, just like human babies! Interesting, right?

Why Is A Gorilla Group Called A Band

The term “band” is used to describe a group of gorillas due to their cooperative and structured social behavior. Much like other animals or even human groups, gorilla bands function as close-knit units where every member has a role. A dominant silverback leads the group, offering protection and making decisions, while the females care for the young, and younger males provide additional support. The use of “band” highlights the unity and teamwork that define their interactions, reflecting their highly organized and social nature.

Famous Gorilla Groups In The World

Gorilla families are renowned for their close bonds and fascinating dynamics, with each group having its own story. The Titus group in Rwanda gained global attention for its compelling leadership shifts and silverback drama, capturing the hearts of researchers and conservationists alike. In Rwanda’s Virunga Mountains, the Kwitonda group stands out for its calm and gentle leader who brought the troop from Congo to Rwanda. Uganda’s Bwindi Impenetrable Forest is home to the famous Habinyanja group, admired for its size and the intricate relationships within. These unique families showcase the intelligence and rich social lives of gorillas, making them symbols of conservation and wonder.

Social Structures Of Gorilla Groups In Africa

Gorilla troops have a complex and organized social structure, led by a dominant silverback male. This silverback is responsible for guiding the group, protecting its members from threats, and maintaining harmony within the troop. The group usually includes adult females, their offspring, and occasionally subordinate males, known as blackbacks.

Females focus on raising and caring for the young, while the younger gorillas engage in play to develop critical social skills. Subordinate males may assist the silverback and could eventually compete for leadership. This structured hierarchy ensures stability, safety, and cooperation within the troop, showcasing the sophisticated social dynamics of gorillas.

How Many Males In Gorilla Groups

The number of male gorillas in a group varies, but typically, there is one dominant male, known as the silverback, who leads and protects the group. Alongside him, there may be a few younger males, or blackbacks, who have not yet reached full maturity or dominance. These blackbacks often support the group and can eventually challenge the silverback for leadership.

In larger groups, it is possible for multiple silverbacks to exist, though only one holds the role of leader. These other males usually have a lower status and may either cooperate with or compete against the silverback. The number of males in a group largely depends on the troop’s size and the social dynamics between its members.

Male Gorilla Mating Ritual – How Often

Dominant male gorillas, or silverbacks, typically engage in mating year-round, though the frequency depends on the number of females in the group and their reproductive cycles. In a typical troop, a silverback may mate with each female several times a month, particularly during her fertile days. On average, a silverback mates with each female around 10 to 12 times per year, though this can fluctuate based on the troop’s dynamics and the availability of mates.

Female gorillas are fertile for a few days each month, and during this period, the silverback mates with them. If a silverback leads a group of 5 to 7 females, he will mate with them repeatedly throughout the year to ensure reproductive success. Mating frequency can also be impacted by the presence of rival males and the overall stability of the group’s social structure.

Female Populations In Gorilla Bands

In gorilla troops, females typically make up a significant portion of the group, often numbering between 3 and 10, depending on the troop’s size and environment. These females are vital to the group’s dynamics, primarily by caring for their offspring and helping to maintain social cohesion. Most adult females remain in the same group throughout their lives, forging strong bonds with the silverback and other members.

The relationship between a female and the silverback is crucial, as he mates with the females and offers protection. Females also engage in social activities like grooming and play, which strengthen their connections with one another and support the overall stability of the group.

Female Gorilla Mating

Female gorillas typically stay with the same dominant male, or silverback, for most of their lives, especially in well-established groups. Once a female mates with a silverback, she usually remains with him, and together they raise their offspring. In fact, silverbacks often lead a troop for 10 to 20 years, providing stability for the females and their young.

However, if a silverback is overthrown or dies, the females may leave the group and join another with a new dominant male. While it’s rare, a female may switch groups if she finds the current leadership unsuitable. Overall, the majority of females maintain long-lasting relationships with their silverbacks, with changes in partners happening infrequently, usually in exceptional circumstances.

facts-about-gorillas

Nestled In For The Evening

While baby gorillas are called infants just like human babies, that’s only one of many similarities between us and gorillas. Another interesting fact about gorillas is that they sleep in nests. Okay, we know what you’re probably thinking. Right now, you’re picturing a nest, in a tree, similar to that a bird would use — but bigger. Instead, a gorilla’s nest is similar to a bed! They assemble different types of vegetation on the ground to give themselves a comfy place to sleep.

But they don’t use the same nest every day — they actually build new ones each and every time they are going to bed! Everyone except the infants, at least. Mostly gorillas sleep in the evening, but they have been observed to take a midday nap. And yes, you guessed it — they make new nests for naps too. 

Gorilla Nests

Do gorillas create nests to sleep in? Yes! They create nests to sleep in, typically on the ground or in trees, depending on their environment. These nests are built by weaving branches, leaves, and other vegetation into a flat, comfortable structure. Gorillas construct a new nest every night, ensuring they have a clean and safe place to rest.

Adult gorillas, especially silverbacks, usually make larger nests, while younger gorillas tend to build smaller ones. The nests are designed for comfort and security, providing a resting place for the gorillas after their daily activities. While gorillas may sometimes use natural structures like tree branches for shelter, their nests are their primary form of rest and protection.

Different Types of Gorilla Nests

Gorillas create nests using materials found in their environment, and the way they build them can differ depending on their habitat, whether it’s mountainous, lowland, or forested regions.

  1. Mountain Gorillas (Rwanda, Uganda, and Congo):
    • Materials: Mountain gorillas in high-altitude regions rely on strong branches, leaves, and grasses. They choose pliable branches that are easy to manipulate into nest shapes.
    • Construction: These gorillas often build their nests either on the ground or in the lower branches of trees, where there is a mix of dense foliage for added protection. The nests are large, often woven with leaves and branches to create a soft, supportive surface. In tree nests, they are crafted to ensure stability, using lower branches close to the trunk for added security.
    • Routine: Every night, gorillas create a new nest, using fresh materials to ensure a clean, comfortable resting place. This practice is vital for their protection and comfort.
  2. Lowland Gorillas (Congo Basin):
    • Materials: In the lowland forests, gorillas have access to an abundance of leaves, vines, and ferns, which they use to build their nests.
    • Construction: These gorillas build nests on the forest floor or occasionally in trees, depending on the available materials. The nests on the ground are densely packed with leaves and vines, offering a stable and cushioned resting place. In areas with larger, flexible trees, they may build tree nests, though these are typically closer to the ground.
    • Adaptation: Lowland gorillas are versatile, adjusting their nest-building methods to suit the terrain and materials they find in their environment, ensuring a safe and comfortable resting space.
  3. Common Nesting Techniques:
    • Regardless of the habitat, gorillas build nests with a well-defined structure. They create a base layer using thicker branches and materials to provide a strong foundation, then add softer leaves and plant materials for comfort. The nests are often bowl-shaped, designed to support the gorilla’s body while protecting them during sleep.
    • Tree Nesting: While tree nesting is more common in dense, mountainous forests, it can also occur in lowland regions with suitable trees. These nests are placed in lower branches and offer extra protection from predators and insects.

No matter where they live, gorillas’ nesting behavior ensures they have a secure, restful environment each night, which is crucial for their well-being and daily activities.

interesting-facts-about-gorillas

They’re Huge!

Just about everyone understands that gorillas are big, but do you know just how big they actually are? Female gorillas are smaller than the males, however, they average around four-and-a-half feet tall, and usually weigh in around 200 pounds. While this isn’t insanely tall, these proportions make for a strong, impressive creature. 

Male gorillas come in about a foot taller than the females, averaging around five-and-a-half feet tall, and they weigh in at about 400 pounds! That’s very big!  Let’s break down the different gorilla types below.

Gorilla Size Compared to Humans

Gorillas are much larger and heavier than humans, with considerable size differences between males and females. Adult male gorillas, especially dominant silverbacks, typically stand about 5.5 to 5.9 feet (1.7 to 1.8 meters) tall when fully upright, although they generally move on all fours, which places them at around 4.5 to 5 feet (1.4 to 1.5 meters) in height. Female gorillas are smaller, typically standing 4.5 feet (1.4 meters) tall when upright and 3.5 feet (1.1 meters) when on all fours. For comparison, the average human male is approximately 5.9 feet (1.8 meters) tall, and the average female is around 5.4 feet (1.6 meters).

Gorilla Weight vs Human Weight

In terms of weight, gorillas are far heavier than humans. A male gorilla can weigh anywhere from 300 to 485 pounds (140 to 220 kilograms), with larger silverbacks reaching the upper end of the scale. In contrast, the average human male weighs around 190 to 200 pounds (86 to 91 kilograms). Female gorillas typically weigh between 150 and 250 pounds (68 to 113 kilograms), which is still heavier than the average human female, who weighs about 150 pounds (68 kilograms). Although gorillas are far stronger than humans, especially in terms of muscle mass, humans excel in dexterity and cognitive abilities.

Hand Size: Human vs Gorilla

Gorillas have considerably larger hands than humans, which are in proportion to their overall size and strength. An adult male gorilla’s hand can span up to 12 inches, roughly double the length of the average human hand. Designed for strength, a gorilla’s hands are wide with thick fingers, perfect for grasping tree branches and navigating through their forest habitats. In comparison, a typical human hand measures around 7.5 to 8 inches and is built for finer, more precise movements, which allow for intricate tasks. While gorillas have strength, humans are more agile in using their hands for detailed work due to our highly developed fine motor skills.

Human Head vs Gorilla Head Size

Gorillas have heads that are much larger than those of humans, reflecting their overall larger physique. The head of an adult male gorilla can be several times the size of a human’s, featuring a broader face and stronger jaw structure to support their powerful chewing muscles. In contrast, a human’s head is smaller in proportion to the body, with a more rounded shape and a significantly larger brain relative to size, allowing for advanced cognitive abilities. While gorillas are built for physical strength, humans have evolved to use their heads for complex thinking and problem-solving.

Different Sizes of Gorillas

Gorillas vary in size based on their subspecies, with male Western Gorillas being quite large, standing tall and weighing significantly more than females. The Mountain Gorilla is among the largest, with adult males being notably robust, while females are smaller but still substantial in size. The Eastern Lowland Gorilla is similarly large, with males being very powerful and females slightly smaller but still impressive in stature.

Western Gorilla Size

The Western Gorilla, which includes both the Western Lowland Gorilla and the Cross River Gorilla, is one of the largest species of great apes. Male Western Gorillas typically stand around 5.5 feet (1.7 meters) tall when upright, and when on all fours, they measure approximately 4.5 feet (1.4 meters). They can weigh between 300 and 485 pounds (140 to 220 kilograms), with silverbacks being the heaviest. Female Western Gorillas are smaller, standing around 4.5 feet (1.4 meters) tall and weighing between 150 and 250 pounds (68 to 113 kilograms), making them notably lighter than their male counterparts.

Size of Western Lowland Gorilla

The Western Lowland Gorilla, a subspecies of the Western Gorilla, is found across the rainforests of Central and West Africa. While still large, the Western Lowland Gorilla tends to be slightly smaller than other subspecies. Adult males usually weigh between 300 and 400 pounds (136 to 180 kilograms) and stand around 5.5 feet (1.7 meters) tall when fully upright. When on all fours, their height is about 4.5 feet (1.4 meters). Females in this subspecies are smaller, with a weight range of 150 to 250 pounds (68 to 113 kilograms) and a height of 4.5 feet (1.4 meters) when standing upright.

Mountain Gorilla Measures At

The Mountain Gorilla, native to the high-altitude forests of Rwanda, Uganda, and the Democratic Republic of the Congo, is one of the most robust gorilla subspecies. Adult male Mountain Gorillas, or silverbacks, are exceptionally large, weighing between 350 and 485 pounds (160 to 220 kilograms). They can stand 5.5 to 5.9 feet (1.7 to 1.8 meters) tall when upright and measure about 4.5 feet (1.4 meters) when on all fours. Female Mountain Gorillas are smaller, weighing between 150 and 250 pounds (68 to 113 kilograms) and typically standing around 4.5 feet (1.4 meters) tall when upright.

Eastern Lowland Gorilla Sizes

The Eastern Lowland Gorilla, another subspecies of the Eastern Gorilla, is generally larger than the Western Lowland Gorilla. Males typically weigh between 400 and 500 pounds (180 to 225 kilograms), with a height of 5.5 to 5.9 feet (1.7 to 1.8 meters) when standing. On all fours, their height reaches around 4.5 feet (1.4 meters). Female Eastern Lowland Gorillas are smaller than males, weighing between 150 and 250 pounds (68 to 113 kilograms) and standing at approximately 4.5 feet (1.4 meters). These gorillas, similar in size to Mountain Gorillas, are known for their impressive strength and considerable bulk.

They’re Innovative Problem Solvers

Gorillas have greatly enhanced our understanding of primate intelligence, particularly in communication and emotional complexity. Their ability to learn and use various forms of communication highlights their advanced cognitive skills, as well as their capacity for forming emotional bonds. Additionally, gorillas have demonstrated remarkable problem-solving abilities, such as using tools in the wild, further showcasing their adaptability and mental prowess.

Koko The Gorilla – One of The Smartest Gorillas

Koko the Gorilla is often celebrated as one of the most intelligent gorillas to have ever lived, revolutionizing our understanding of primate communication. Born in 1971, Koko was a Western lowland gorilla raised in captivity at the San Francisco Zoo, where she became famous for her ability to communicate using American Sign Language (ASL). Throughout her life, Koko mastered over 1,000 signs, allowing her to understand and convey thoughts, feelings, and desires with remarkable clarity.

Emotional Intelligence

What made Koko truly extraordinary was not just her linguistic abilities but also her emotional intelligence. She developed strong bonds with humans, particularly her trainer, Francine “Penny” Patterson, with whom she worked for many years. Koko’s emotional range was evident in her actions, such as when she showed empathy and comforted others, and even displayed a sense of grief when her pet cat, All Ball, passed away. Koko’s legacy has left an indelible mark on the study of animal intelligence, challenging our perceptions of gorillas as not only powerful animals but also deeply emotional and highly intelligent beings.

Gorillas and Ant: 2014

This discovery is particularly fascinating, especially since it’s a relatively recent addition to our understanding of gorillas. In 2014, it was observed that gorillas in the wild use tools to help them tackle challenges they encounter.

The breakthrough came when a gorilla was seen trying to harvest ants from an anthill, but the ants’ bites caused the first gorilla to retreat. A second gorilla made the same attempt but faced the same unpleasant result. However, this gorilla didn’t give up. She ingeniously fashioned a tool from a twig, which she used to retrieve the ants and enjoy her meal. This remarkable behavior shows that gorillas are capable of problem-solving, and other instances have shown them using sticks to measure water depth and even creating tools in captivity.

Book Your Gorilla Tour And Learn For Yourself Today

Experiencing gorillas in their natural habitat is a unique adventure that’s closer than you may think. With Amahoro Tours, you can explore the lush forests of Rwanda, Uganda, or the Congo, home to some of the world’s most majestic wildlife. Embark on a once-in-a-lifetime journey to witness these incredible creatures up close in their natural surroundings. Our expert Gorilla trekking guides will lead you through these captivating landscapes, sharing fascinating insights about gorillas’ behaviors, their social structure, and the delicate ecosystems they inhabit. This is an adventure you will never forget, with memories that will last a lifetime.  Interested in learning more about our 1 day gorilla trek in Rwanda? We offer a multitude of Rwanda gorilla tours, Congo gorilla trekking and Uganda gorilla family treks.

Why wait to turn this dream into a reality? Reach out to Amahoro Tours today to book your gorilla trek and  find the best gorilla tours in Rwanda to create memories that will stay with you forever!

See What Our Guests Are Saying

Get A Free Quote Now