The mountain gorilla (Gorilla beringei beringei) remains one of the rarest great apes on Earth, but its population trajectory has shifted from grim decline to cautious optimism. The latest census, coordinated by the Dian Fossey Gorilla Fund and the Uganda Wildlife Authority, counts more than 1,063 individuals across the Virunga Massif and Bwindi Impenetrable Forest — the species’ only two remaining habitats.
Three Years of Consecutive Growth
For three straight years, monthly monitoring has confirmed net population growth across all family groups. Birth rates are outpacing mortality, and infant survival to age two — a key demographic indicator — has risen to 78 percent, up from 68 percent a decade ago. Researchers attribute the improvement to veterinary intervention programs that treat snare injuries, respiratory infections, and mange, conditions that historically caused significant cub mortality.
Genetic diversity remains a concern given the small total population. However, genetic sampling of individuals across both ranges shows that connectivity-supporting gorilla movement between subpopulations is maintaining diversity above the minimum viable threshold identified by population viability analysis. A single confirmed cross-range dispersal event in 2023 gave conservationists confidence that genetic rescue is occurring naturally.
The Human Dimension
Mountain gorilla survival is inseparable from community economics. Tourism revenue from Bwindi and Virunga brings approximately $35 million annually to local communities in Rwanda, Uganda, and the Democratic Republic of Congo. When families near park borders benefit directly from gorilla protection, the incentives against poaching and habitat encroachment shift dramatically.
The remaining threats are geopolitical: conflict in eastern DRC has periodically displaced rangers and halted monitoring. Climate modeling also predicts shifts in the high-altitude bamboo forests that gorillas rely on seasonally, introducing a long-term uncertainty that population growth alone cannot resolve.
