Sir David Attenborough describes how long-tailed macaques barter with tourists by stealing phones in the latest edition of Planet Earth.
The Planet Earth team has filmed the adapted behaviour of long-tailed macaques who steal tourists’ phones to barter, learning that more valuable items results in greater rewards from travellers.
The robbing-bartering phenomenon has only been observed in Uluwatu, and has been present for over 30 years.
Planet Earth III continues on BBC One at 6.20pm on Sunday 3 December 3.
