r/nature

Excerpt from the first part of the article:

Between the branches of broad-leaf evergreens, a pair of blue-ringed eyes stare across the treetops of Khau Ca’s limestone forest.

It’s a rare glimpse of one of the world’s most endangered monkeys — and one that field conservationist Canh Xuan Chu relishes.

Tonkin snub-nosed monkeys are endemic to Vietnam, and only found in fragmented patches of forest in two of the country’s northernmost provinces, bordering China.

A population of just 50 was discovered in Khau Ca in 2002, adding to the handful of locations where the species was rediscovered in the late 1980s and 1990s, after being presumed extinct.