A species of monkey so rare and elusive it was feared to be extinct has been caught on camera by scientists in Indonesia.
The Miller's grizzled langur is classified as one of the most endangered primates in the world and it was thought it may have disappeared for good after none were recorded in the wild for several years.
However, researchers were delighted to capture the creatures on time-lapse cameras they had set up in the jungles of Borneo.
As almost no previous photos of the monkey exist, it took some time for the sighting to be confirmed, explained PhD student at Canada's Simon Fraser university Brent Loken.
However, when the discovery was double-checked using museum sketches, he said: "We were all pretty ecstatic."
Much of the monkey's original forest habitat has been destroyed over the past few years by fires, human encroachment and the use of land for agriculture and mining, the researchers observed.