New biological discovery

Compared to 20 years ago, much more is currently known about this species which inhabits the inaccessible swampy forests only on the island of Borneo. Their ecology is now relatively well-established, as research has progressed and new information been made accessible to both academics and the general public. For example, the proboscis monkeys were previously thought to inhabit only mangrove forests along coastal areas, and their behaviour was only understood through limited observations of their day-time activities along waterways. Since then, improved research techniques have led to new discoveries, including: