By Kristiana Hall
An orangutan has been caught scaring his peers wearing a ghost-like costume and jumping behind them.
The video shows the monkey wearing a giant white plastic bag as he plays with other smaller orangutans.
Nicola Walpen, 32, captured the clip while working at the Borneo Orangutan Survival Foundation earlier this year.
She added: “The video shows orangutan orphan Julien is playing with his classmates in the forest school of one of our reintroduction programs.
“He is using a bag as a costume, which makes him a pretty convincing ghost.
“We are non-profit organisation dedicated to the conservation of the Bornean orangutan and its habitat, in cooperation with local communities, the Indonesian Ministry of Forestry and international partner organisations.”