THE movement of the two tigers released into the Tampang Belimbing forest, Lampung, can be monitored accurately thanks to a device called a Global Positioning System collar. This device can give information about the time, geographical position, height of location, and whether the tigers behave actively or passively every hour.

Agam, the younger male tiger, is wearing a GPS collar made in New Zealand and donated by the Australian Zoo. Pangeran,