Nyungwe National Park holds troops of Angolan black and white colobus monkeys that number in the hundreds, among the largest gatherings of any primate species in Africa. Sightings happen on a dedicated trek through a specific section of forest, usually in the morning, and require a permit and a guide arranged in advance. The experience is shorter and less physically demanding than gorilla or chimpanzee trekking.
Table of Contents
- Why Nyungwe's colobus troops are unusual
- What makes the troops so large
- What the monkeys look like and how they move
- Booking a colobus trek
- What a typical morning looks like
- Fitness and difficulty compared to other treks
- What else lives alongside the colobus
- Best time of year and time of day
- Combining a colobus trek with other Nyungwe activities
- Getting to the trailhead
- Combining Nyungwe with a wider Rwanda primate itinerary
- Photographing a colobus troop
- Mistakes to avoid
- Frequently Asked Questions
Why Nyungwe's colobus troops are unusual
Most primate sightings in East Africa involve small family groups moving through the canopy. Nyungwe's Angolan black and white colobus monkeys are different. They gather in troops that can number in the hundreds, moving together through the canopy in a way that few other primates anywhere in Africa do. Seeing one of these troops cross overhead, branch by branch, in a continuous stream of black and white fur, is one of the more striking wildlife experiences Rwanda offers.
For an overview of the park these monkeys call home, see our Nyungwe National Park guide. This article focuses specifically on the colobus experience: what makes the troops so large, where to find them, and how to plan a trek.
What makes the troops so large
Angolan black and white colobus monkeys are found across parts of central and East Africa, usually in smaller groups. Nyungwe's population stands out because of the sheer scale of some of its troops, a pattern researchers link to the size and quality of the forest habitat here. Whatever the precise explanation, the practical result for visitors is that a single sighting can mean dozens or even hundreds of individuals moving through the trees at once, rather than the handful you might see elsewhere.
Colobus monkeys lack a thumb on their hands, a trait reflected in their name, which comes from a Greek word describing this mutilated appearance. The adaptation does not slow them down, and they move through the canopy with remarkable speed and precision.
What the monkeys look like and how they move
Adult Angolan black and white colobus have a striking coat: a black body, a white facial fringe, long white flank hairs called a mantle, and a bushy white tail tip that trails behind them as they leap. They are almost entirely arboreal, rarely descending to the ground, and move by long leaps between branches rather than by climbing along trunks. A large troop moving together produces a distinctive rustling and crashing sound in the canopy well before you see the animals themselves.
Booking a colobus trek
A colobus trek in Nyungwe follows a similar structure to the park's other primate activities. You arrange a permit and guide in advance, meet at the relevant trailhead early in the morning, and follow a park guide and trackers into the section of forest where a troop was last located. Because the troops move, the guide's local knowledge of recent movements matters more than any fixed trail.
Book your colobus trek at the same time as any other Nyungwe activity you plan, since permit numbers and guide availability are limited and the best morning slots fill first.
What a typical morning looks like
Treks begin early, usually before or around sunrise, when the troops are most active and the light in the forest is easiest to work with. After a briefing at the trailhead, you follow your guide along forest paths, sometimes leaving the trail entirely to follow the sound of the troop overhead. Once you find the group, you typically spend a set period of time observing them before returning to the trailhead.
| Stage | What happens | Approximate duration |
|---|---|---|
| Briefing | Guide explains the plan and any rules | 10 to 15 minutes |
| Search | Walking to locate the troop, sometimes off-trail | 30 minutes to 2 hours |
| Observation | Time with the troop once located | 1 hour |
| Return | Walking back to the trailhead | 30 minutes to 1 hour |
Fitness and difficulty compared to other treks
A colobus trek is generally considered less physically demanding than gorilla trekking in Volcanoes National Park or chimpanzee tracking in Nyungwe's own Cyamudongo forest, since the terrain used for colobus viewing tends to be gentler and the observation itself does not require sustained climbing. That said, Nyungwe's trails can still be muddy and uneven, and reasonable fitness and proper footwear make the morning considerably more comfortable.
What else lives alongside the colobus
Nyungwe's forest is home to a wide range of other primates, and a colobus trek often turns up incidental sightings of other species moving through the same stretch of canopy. Our guide to the 13 primates of Nyungwe Forest sets out the full list and how each species differs in behaviour and habitat within the park.
The forest is also rich in birdlife, and guides on a colobus trek are usually happy to point out notable species along the way, even though the main purpose of the outing is the primates themselves.
Best time of year and time of day
Colobus troops can be seen throughout the year, since they do not migrate, but visibility through the canopy is generally better in the drier months when the foliage is somewhat less dense. Early morning remains the best time of day regardless of season, both because the troops are most active then and because the forest light is more favourable for photography.
Rain can move a booked trek's start time or route at short notice. Build a buffer day into your itinerary if a colobus trek is a priority rather than scheduling it on your last possible morning in the park.
Combining a colobus trek with other Nyungwe activities
Most visitors pair a colobus trek with at least one other Nyungwe activity during a multi-day stay, since permits for different activities can usually be scheduled on separate mornings. Popular pairings include the canopy walk, a waterfall hike, or a night walk in search of nocturnal species. Our guide to Nyungwe's night walk covers the very different set of animals that emerge after dark in the same forest.
If you would rather build a longer stay around the park's tea country as well as its wildlife, our guide to Rwanda's tea plantations covers the estates that border the forest and make a relaxed contrast to a morning of trekking.
Getting to the trailhead
Nyungwe's various trailheads are spread along the road that runs through the park, and your guide or operator will confirm which one is relevant for the colobus trek on a given day depending on recent troop movements. Most visitors base themselves at a lodge near the park and travel a short distance to the trailhead each morning, rather than commuting from further afield.
Combining Nyungwe with a wider Rwanda primate itinerary
For travellers building a trip around Rwanda's primates rather than a single park, a colobus trek fits naturally into a broader route that also takes in gorilla trekking in the north and chimpanzee tracking elsewhere in Nyungwe. Our 6-day Rwanda primate safari is built around exactly this kind of itinerary, sequencing gorillas, chimpanzees and Nyungwe's other primates across a single trip so that transfers and permit timings line up sensibly.
If your Nyungwe stay allows a second morning trek, pairing a colobus outing with the Isumo waterfall trail the following day gives a useful contrast: one activity built around tracking a moving troop, the other a fixed route through forest and farmland ending at a waterfall. Both start from trailheads reachable from the same lodges, which keeps logistics simple.
Photographing a colobus troop
Colobus monkeys move quickly through the canopy, which makes photography more demanding than it first appears. A long lens helps considerably, since troops are often spotted well above eye level and rarely pause for long in one position. Shooting in the early morning, when the troop is typically most active, also gives softer light through the canopy than the harsher conditions of midday, and a faster shutter speed helps freeze the motion of a leaping animal rather than the blur that a slower setting produces in the shaded understorey.
Mistakes to avoid
Do not assume a colobus trek guarantees the same close, prolonged viewing you might get with habituated gorillas, since colobus troops move more continuously and observation time is often shorter than the search time that precedes it. Do not skip rain gear even in the dry season, since Nyungwe generates its own weather and a clear morning can turn wet by midday. And do not schedule a colobus trek back to back with a long drive on the same day, since an early start followed by hours in a vehicle leaves little energy to enjoy either.
Frequently Asked Questions
How large are Nyungwe's colobus monkey troops?
Some troops number in the hundreds, among the largest gatherings recorded for this species anywhere in Africa. The exact number seen on a given morning depends on which section of the troop is visible from the trail.
Is a colobus trek harder than gorilla trekking?
Generally no. The terrain used for colobus viewing tends to be gentler, and the activity is usually considered less physically demanding than gorilla trekking in the Virunga foothills or chimpanzee tracking in Cyamudongo.
Do I need a separate permit for colobus trekking?
Yes, colobus trekking is booked and permitted separately from the park's other primate activities, so confirm with your operator which permits you need for your full itinerary.
What time should I arrive at the trailhead?
Arrive at the time your guide specifies, which is usually early morning before or around sunrise, since this is when the troops are most active and easiest to locate.
Can I see other primates on a colobus trek?
Yes, Nyungwe hosts several other primate species in overlapping habitat, and incidental sightings during the search for a colobus troop are common, though not guaranteed.
What should I wear for a colobus trek?
Sturdy, closed walking shoes, layered clothing, and a light rain layer are recommended, since trails can be muddy and Nyungwe's weather changes quickly even within a single morning.