The Tonkin snub-nosed monkey, a rare and critically endangered species endemic to Vietnam, is experiencing a fascinating resurgence in one forest while facing a dire decline in another. This article delves into the contrasting fortunes of these monkeys, exploring the factors driving their population dynamics and the efforts to protect them.
A Rare Glimpse of a Critically Endangered Species
In the lush Khau Ca forest, a pair of blue-ringed eyes peer across the treetops, a rare glimpse of one of the world's most endangered monkeys. Field conservationist Canh Xuan Chu relishes these moments, as the Tonkin snub-nosed monkeys, with their distinctive facial markings, are shy and elusive, often disappearing at the slightest unusual sound.
The discovery of a population of just 50 in Khau Ca in 2002 was a significant find, adding to the handful of locations where the species was rediscovered in the late 1980s and 1990s after being presumed extinct. However, the story of these monkeys is not a straightforward success story. While Khau Ca's population has more than tripled since 2002, reaching an estimated 160 individuals, the species has all but disappeared from other habitats.
A Success Story in Conservation
The success in Khau Ca can be attributed to the dedicated efforts of Fauna & Flora International, which established a conservation field station and community conservation teams to protect the forest. These teams removed snares, reported illegal deforestation, and created new income streams through patrol groups, supporting local communities that traditionally relied on farming and foraging in the forest.
Tran Van On, a member of Fauna & Flora's community conservation team, has witnessed a significant increase in community awareness about the conservation of the Tonkin snub-nosed monkey. This shift in consciousness is crucial, as it highlights the importance of safeguarding forest habitats and other wildlife species.
The recent survey, conducted in October and November 2025, utilized innovative methods, including thermal imaging drones, camera traps, and audiomoths, to monitor the monkey's unique calls. This comprehensive approach has allowed for a more accurate count, providing hope for the species' survival.
A Dire Decline in Another Forest
In stark contrast, the story in Quan Ba, previously home to the second-largest population, is one of decline. Patrollers in Quan Ba haven't seen the species since 2020, and the most recent survey in 2024 found no signs of the monkeys. The primary culprit behind this decline is cardamom farming, a lucrative activity that involves clearing trees and cutting firewood, degrading the forest ecosystem that the monkeys depend on.
Unlike Khau Ca, Quan Ba is not a formally protected area, which limits the effectiveness of conservation efforts. Fauna & Flora has maintained one patrol group in Quan Ba, but the challenge remains significant due to the vast area and the low chance of spotting the monkeys.
Connecting the Dots: Wildlife Corridors
To address the connectivity issue, Fauna & Flora is creating wildlife corridors from Khau Ca, aiming to connect with Quan Ba in the future. These corridors are crucial for maintaining biodiversity and providing a safe passage for the monkeys to move between habitats.
Conclusion: A Call to Action
The story of the Tonkin snub-nosed monkey serves as a powerful reminder of the delicate balance between human activities and the survival of endangered species. While Khau Ca's success story offers hope, it also underscores the need for continued conservation efforts and the importance of protecting critical habitats.
As we reflect on these contrasting fortunes, it becomes clear that the future of these monkeys depends on our ability to address the challenges posed by human activities, such as cardamom farming, and to create a sustainable future where both humans and wildlife can thrive.
