These snakes are completely arboreal and are rarely not found in a tree! If you see one on the ground it’s because it’s trying to evade predators (not much messes with these rather poisonous snakes). They are born, mate and die in trees!
These guys are very poisonous and are hard to detect in their native habitat. I advise if you’re somewhere in the jungles on the east coast of Africa, just don’t go climbing random trees.