Rwanda | Treetop camera traps in Nyungwe NP take images of rare animals difficult to see from ground
Sneaking up on animals can be tough. That’s why wildlife researchers often turn to motion-sensing cameras, also known as camera traps, to study animals in the wild.
However, most of these camera traps are positioned at or near ground level, leaving a diverse world of animals unexamined: those that dwell in the trees above.
https://news.mongabay.com/2020/03/camera-traps-in-trees-reveal-a-richness-of-species-in-rwandan-park/