Only about 300 snub-nosed monkeys (pictured, an individual caught by camera trap) are thought to remain in the wild, conservationists say.
Though the species' habitat is now mostly pristine jungle, logging for high-value trees is taking place not far from where the camera traps were set, FFI's Momberg said.
The Myanmar Forest Department supports the idea of designating a new national park, but "this process requires time, while logging needs to stop as soon as possible," he added.
Even if logging is not directly affecting the monkeys' habitats, the loggers' roads "allow easy access for hunters," noted photographer Holden.
The monkeys are also at risk of being hunted and sold for traditional Chinese medicine, he said, though they are currently less valuable than the commonly hunted macaque. Snub-nosed monkeys are also known to have been killed for food.
(See pictures: "Bear Bile, Tiger Parts Sold in Myanmar Markets.")