A Conservation Story in Six Decades
The history of mountain gorilla conservation is a story of escalating crisis, scientific discovery, policy innovation, and — ultimately — population recovery against remarkable odds. Understanding this history provides context for the current conservation system and appreciation for the accumulated effort that has produced the population numbers visible today. From the first formal census in the 1950s to the 2018 IUCN reclassification from Critically Endangered to Endangered, the mountain gorilla’s conservation journey spans six decades and multiple generations of researchers, rangers, policymakers, and advocates.
Early Knowledge: 1950s-1960s
George Schaller, the American biologist who conducted the first rigorous field study of mountain gorillas in 1959 and 1960, estimated the Virunga population at approximately 450 individuals and provided the first baseline data on gorilla behaviour, ecology, and distribution. His 1963 book The Mountain Gorilla is a foundational text of gorilla conservation science. Schaller’s estimate of 450 Virunga gorillas in 1960 would prove to be one of the higher historical estimates — the population continued to decline in the following decades.
The Fossey Era: 1967-1985
Dian Fossey’s establishment of the Karisoke Research Centre in 1967 inaugurated the era of continuous, individual-level gorilla monitoring that defines the modern conservation approach. For 18 years, Fossey and her research team habituated specific gorilla families, documented their social lives in unprecedented detail, and maintained a continuous physical presence in gorilla habitat that deterred poaching and created the data infrastructure for ongoing monitoring.
The 1981 census that produced the alarm-triggering count of 254 individuals — conducted by Fossey and colleagues using standardised methodology across the Virunga Massif — provided the quantitative evidence of population crisis that mobilised international conservation response. The figure established the population minimum and created the political impetus for intensive protection.
Tourism as Conservation: The 1980s Breakthrough
Rwanda’s Mountain Gorilla Project, launched in 1979, and the opening of gorilla trekking to tourists in Rwanda in 1983 represented the most consequential policy innovation in gorilla conservation history. The decision to develop controlled, high-value tourism around habituated gorilla families transformed the conservation economics of gorilla protection by creating direct financial returns from living gorillas that exceeded the value of alternative uses of gorilla habitat. Uganda followed in 1993 when Bwindi was gazette as a national park and gorilla trekking was formally established.
The 1990s: War and Resilience
The 1994 Rwandan genocide and the subsequent regional conflicts represented the most severe test of mountain gorilla conservation in its history. The catastrophic human tragedy disrupted the tourism-based conservation system, forced the evacuation of Karisoke Research Centre, and introduced the risk of gorilla killing by armed groups. The response of the gorilla conservation community — maintaining field presence where possible and rebuilding operations when security permitted — demonstrated institutional resilience. Post-conflict population surveys showed that the gorilla population had not suffered the catastrophic losses that some feared.
The 2000s: Institutional Development
The 2000s saw substantial institutional development in mountain gorilla conservation. Uganda Wildlife Authority’s reform and strengthening, the expansion of gorilla habituation in Bwindi, the development of community benefit programmes, and the growth of conservation NGO capacity in all three range countries created a stronger institutional foundation. Population censuses in 2003 and 2010 documented continued population growth, confirming that the conservation system was producing results. Several DRC rangers were killed protecting gorillas during this period — a cost of conservation whose gravity cannot be overstated.
The 2010s: Population Milestone
The 2015 census announced a mountain gorilla population exceeding 1,000 individuals for the first time in recorded history — a milestone celebrated globally as evidence that conservation investment was producing measurable recovery. The follow-up 2018 census confirmed continued growth at 1,063 individuals, and the resulting IUCN reclassification from Critically Endangered to Endangered was the formal scientific acknowledgement of the population’s improved trajectory.
The reclassification was carefully communicated as a milestone in a continuing effort rather than the conclusion of a success story. Mountain gorillas remain Endangered, the threats remain active, and the conservation investment required to maintain the recovery trajectory is no less than it was before the reclassification.
Final Thoughts
Sixty years of mountain gorilla conservation contain sufficient success and failure, heroism and tragedy, innovation and setback to generate many volumes of analysis. What the history shows, at its most fundamental, is that sustained, well-funded, community-integrated conservation management of a specific species in a specific place can produce measurable recovery even from near-extinction conditions. The mountain gorilla is the proof of concept for a conservation model that should inform how the world thinks about protecting endangered species everywhere.
