Gorillas of Africa

When we picture Africa, our minds often turn first to safari, the vast open plains and iconic wildlife that have long defined the continent’s appeal.

The big 5

Elephants, rhinos, lions, leopards and African buffalo are among the animals most commonly associated with Africa. Gorillas also hold a special place in our imagination—but what exactly do we picture when we think of them?

For many people, a gorilla is simply a gorilla. In reality, these remarkable primates are divided into two distinct species and four recognised subspecies, each with its own appearance, habitat, behaviour and conservation challenges.

Western Gorillas – Exploring the Unique Subspecies

Deep within the dense rainforests of West and Central Africa lives the western gorilla, one of the continent’s most powerful yet vulnerable animals. These remarkable primates inhabit a landscape of tropical forests, swampy clearings and remote mountain terrain, where they live in close-knit family groups generally led by a dominant silverback.

The western gorilla is divided into two distinct subspecies; the western lowland gorilla and the Cross River gorilla. Although closely related, they occupy different habitats and face very different circumstances. Western lowland gorillas are found across several Central African countries and are the more widespread of the two. Cross River gorillas survive only in a small, fragmented region along the border between Nigeria and Cameroon, making them far more difficult to encounter in the wild.

Despite their physical strength, both subspecies remain highly vulnerable. Habitat destruction, poaching, disease and the fragmentation of their forest territories continue to threaten their survival. Their future depends not only on protecting individual animals but also on preserving the vast forest ecosystems and wildlife corridors they require.

Here, we take a closer look at the western lowland and Cross River gorillas, their habitats, social structures and behaviours, the differences that set them apart, and the conservation efforts working to secure their future.

Western Gorilla – Gorilla gorilla

Western gorillas are generally smaller and lighter in colour than their eastern relatives. Their coats range from black and charcoal grey to dark brownish-grey, often with a noticeable reddish-brown or auburn colouring across the forehead. As males mature, the hair across their back gradually turns silver-grey, earning them the familiar name “silverback”.

Highly social animals, western gorillas usually live in close-knit family groups that may contain anywhere from two to twenty individuals. Each group is generally led by a dominant silverback, accompanied by several adult females and their offspring. The silverback plays a central role in the group, making decisions about movement and feeding while protecting its members from potential threats.

The relationships within these groups are complex and deeply bonded. Young gorillas learn through observation, play and interaction, while mothers maintain particularly close relationships with their infants. Females generally reach sexual maturity at around eight or nine years of age, although they usually give birth for the first time several years later. Their young remain dependent on them for approximately three to four years.

As they mature, both males and females typically leave the group in which they were born. Young males may spend time alone or form temporary bachelor groups before eventually establishing a family group of their own. Females usually transfer to another group before breeding, helping to maintain genetic diversity among gorilla populations.

Threats and Conservation Challenges

Despite their strength and adaptability, western gorillas face a combination of threats that continue to place enormous pressure on their survival. One of the most devastating is the Ebola virus, which has caused significant declines in some wild populations. Because gorillas live in close social groups, the disease can spread rapidly, while their slow reproductive rate means affected populations may take generations to recover.

Poaching also remains a serious concern. Gorillas may be hunted for bushmeat or killed unintentionally by snares intended for other forest animals. At the same time, commercial logging, mining, agricultural expansion and road construction are fragmenting the forests on which they depend. These activities not only destroy habitat but also open previously remote areas to hunters and human settlement.

Political instability and civil conflict create further challenges by disrupting conservation programmes, weakening law enforcement and making it difficult for researchers and wildlife authorities to monitor gorilla populations. Protecting western gorillas therefore requires more than safeguarding individual animals, it depends upon preserving connected forest habitats, strengthening local conservation efforts and supporting the communities that share these landscapes.

Western Lowland Gorilla — Gorilla gorilla gorilla

The western lowland gorilla is the most widespread and numerous of the four recognised gorilla subspecies, although it remains critically endangered. It inhabits the dense tropical forests and swampy lowlands of Central Africa, with populations found in Angola’s Cabinda enclave, Cameroon, the Central African Republic, Equatorial Guinea, Gabon and the Republic of the Congo. IUCN Great Apes

Compared with other gorilla subspecies, western lowland gorillas are generally smaller and more lightly built. They typically have short, dark brownish-grey hair, broad shoulders and long, powerful arms. Adult males are considerably larger than females and develop the distinctive silver-grey colouring across their backs as they mature.

Although immensely strong, western lowland gorillas are generally quiet and non-aggressive animals. They spend much of their day moving through the forest in search of food, communicating through vocalisations, gestures and body language. Their diet is predominantly plant-based and changes with the seasons. Fruit is particularly important when available, supplemented by leaves, stems, shoots, bark and occasional insects.

Their remote rainforest habitat makes them difficult to study, which is part of what continues to fascinate researchers. Responsible gorilla tourism in selected areas also allows a limited number of visitors to observe these animals in the wild while helping generate funding for habitat protection and local conservation initiatives. Smithsonian’s National Zoo

Cross River Gorilla — Gorilla gorilla diehli

Although western lowland gorillas are more numerous and widespread, their populations are neither stable nor secure. They remain critically endangered and have experienced substantial declines due to disease, poaching and habitat loss. World Wildlife Fund

The Cross River gorilla is the rarest of the four gorilla subspecies, with an estimated 200 to 300 individuals remaining in the wild. These small, fragmented populations inhabit the rugged forests and mountainous terrain along the border between Nigeria and Cameroon. Their preference for remote areas, combined with their natural wariness of humans, makes them extremely difficult to observe and study.

Cross River gorillas closely resemble western lowland gorillas, although researchers have identified subtle differences in the shape of their skulls and teeth. Because few groups are habituated to human presence, scientists often monitor them indirectly through nesting sites, footprints, dung samples, genetic analysis and camera-trap images rather than direct observation.

Their isolation offers some protection from human activity, but it also creates serious conservation challenges. With populations scattered across separate forest fragments, the loss of even a small number of animals can have a significant impact on the survival and genetic diversity of the subspecies.

Unique Behaviour

One particularly fascinating insight into Cross River gorilla behaviour came from observations of a non-habituated group at Kagwene Mountain in Cameroon. Rather than immediately retreating from people, as gorillas commonly do, members of this group were seen throwing handfuls of grass and detached branches during defensive displays.

This behaviour should not be considered typical of every Cross River gorilla, but it provides an intriguing example of how one population may have adapted its responses to human encounters. It has also contributed to the wider study of tool use, communication and defensive behaviour among wild gorillas. American Journal of Primatology study

Mountain Gorilla — Gorilla beringei beringei

With its powerful build, expressive face and thick, dark coat, the mountain gorilla is perhaps the image most people picture when they think of gorillas in the wild. Its dense fur is an important adaptation to the cool, damp conditions of the high-altitude forests it inhabits.

Mountain gorillas survive in two isolated populations. One lives across the Virunga Massif, which extends through Rwanda, Uganda and the Democratic Republic of the Congo. The other is found within Uganda’s Bwindi Impenetrable National Park and the neighbouring Sarambwe Nature Reserve in the DRC.

Despite their immense strength and imposing presence, mountain gorillas are generally calm, social and deeply connected to their family groups. Encounters are closely controlled and always conducted in the presence of trained guides and trackers. Sitting quietly in the forest as a silverback watches over its family can be one of Africa’s most humbling wildlife experiences.

Just over 1,000 mountain gorillas are believed to remain in the wild. While this number is still dangerously low, it represents a significant conservation achievement. Decades of habitat protection, veterinary care, anti-poaching patrols and carefully managed tourism have helped their population increase, leading to their conservation status being changed from critically endangered to endangered in 2018. Their recovery remains fragile, however, and continued protection is essential. World Wildlife Fund

A Fragile Conservation Success

Mountain gorillas are no longer classified as critically endangered. Their status was changed to endangered in 2018 following a gradual increase in their population, an encouraging achievement, but one that should not suggest their future is secure.

Habitat loss, poaching, human-borne disease and the continuing effects of regional conflict remain serious threats. With just over 1,000 individuals living across two isolated populations, the loss of even a small number of gorillas could have a significant effect on their long-term survival.

One of the most encouraging conservation stories has emerged from the Virunga Mountains. Habituated groups such as the Susa and Amahoro families in Rwanda’s Volcanoes National Park have become powerful symbols of what sustained protection can achieve. Continuous monitoring, anti-poaching patrols, veterinary intervention and carefully managed tourism have all contributed to the population’s recovery.

These gorilla families also play a broader role in the region. Responsible gorilla tourism generates employment, supports conservation programmes and can provide income for neighbouring communities. It also allows visitors to learn about the animals and the challenges they face, transforming a wildlife encounter into a deeper understanding of why their protection matters.

The recovery of the mountain gorilla offers genuine hope, but it remains a fragile success story, one that depends on conservation organisations, governments, researchers, local communities and travellers continuing to work together.

Grauer’s Gorilla — Gorilla beringei graueri

Unlike its high-altitude relative, Grauer’s gorilla, historically known as the eastern lowland gorilla, inhabits a broad range of lowland, transitional and montane forests in the eastern Democratic Republic of the Congo. The name “eastern lowland gorilla” can therefore be slightly misleading, as some populations live at considerable elevations.

Grauer’s gorilla is the largest of the four recognised gorilla subspecies and, consequently, the largest living primate. It has a powerful, stocky body, broad chest, large hands and a comparatively short muzzle. Adult silverbacks can weigh more than 200 kilograms, giving them a presence that commands both respect and awe.

The most widely cited recent estimate suggests that approximately 6,800 Grauer’s gorillas remain in the wild. This figure is higher than earlier estimates because researchers were able to survey previously inaccessible areas; it does not represent a sudden population recovery. Their numbers have still declined dramatically over recent decades, and the subspecies remains classified as critically endangered. Wildlife Conservation Society

Conservation Challenges

Despite their physical strength, Grauer’s gorillas remain extremely vulnerable. Habitat destruction caused by logging, agricultural expansion and mining continues to fragment the forests of the eastern Democratic Republic of the Congo. Roads and mining settlements can open previously remote areas to hunting, while prolonged conflict and political instability make it difficult for rangers and researchers to protect and monitor gorilla populations.

Poaching presents another serious threat. Gorillas may be deliberately hunted for bushmeat or injured and killed by snares intended for other forest animals. Because females reproduce slowly and usually raise only one infant at a time, the loss of even a small number of animals can affect a population for generations. Grauer’s gorillas remain classified as critically endangered. World Wildlife Fund

These challenges are not limited to one subspecies. Across Africa, gorillas face habitat loss, forest fragmentation, poaching, disease and increasing contact with human communities. Their close genetic relationship to humans also makes them susceptible to human illnesses, particularly respiratory infections. Protecting them therefore requires more than simply drawing boundaries around national parks.

Conservation organisations work alongside governments, scientists, rangers and local communities to address these threats from several directions. Strategies include anti-poaching patrols, veterinary care, disease monitoring, habitat restoration, wildlife corridors and long-term research. Equally important are programmes that support education, healthcare and sustainable livelihoods, reducing the economic pressures that can lead to hunting or forest destruction.

The Role of Responsible Tourism

Carefully managed gorilla tourism can make an important contribution to conservation. Permit revenue can help fund park management, ranger patrols, veterinary programmes and community projects, while tourism creates employment for guides, trackers, porters, lodge staff and local businesses. It also gives travellers an opportunity to understand the value of protecting gorillas and the forests they inhabit.

However, tourism is only beneficial when it is tightly controlled. Visitor numbers must be limited, safe viewing distances maintained and health protocols followed to reduce stress and the risk of disease transmission. Travellers should never visit gorillas when unwell, attempt to touch or feed them, or support operators that disregard conservation guidelines. Not every gorilla population is suitable for tourism, particularly groups that have not been carefully habituated to a limited human presence. IUCN Great Ape Tourism Guidelines

Gorillas are more than extraordinary animals to encounter. By dispersing seeds and moving through the vegetation, they help maintain the diversity and regeneration of their forest ecosystems. Protecting gorillas therefore safeguards far more than a single species, it helps preserve forests, supports neighbouring communities and protects countless other plants and animals.

The future of Africa’s gorillas depends upon cooperation between the people living alongside them, conservation organisations, governments and responsible travellers. Their survival is not guaranteed, but the recovery of the mountain gorilla demonstrates what sustained commitment can achieve. If those efforts continue, future generations may still have the privilege of encountering these remarkable primates where they belong; living freely in Africa’s forests.

Experiencing gorillas in the wild is more than a wildlife encounter, it is an opportunity to understand why their protection matters. When planned responsibly, your journey can support conservation initiatives, create opportunities for local communities and help safeguard the forests these remarkable primates call home.

If gorilla trekking is something you have always dreamed of, get in touch with Forward Travel. We can help create a carefully planned journey through Uganda, Rwanda or the wider region; one that allows you to experience these extraordinary animals respectfully, responsibly and on their terms.