o study the behavior of animals so large
and potentially dangerous can be difficult. Too close and you could get killed.
Too far away and you can’t learn anything. So what to do? Technology
can help.
First, the rhino can be carefully shot with a small dart containing a sleeping
drug. A few minutes later, after the rhino falls asleep, scientists can
move in and attach a small radio transmitter. The transmitter will send back
information about the rhino’s movements after it wakes up. Using computers
and GPS signals,
scientists can track a rhino in thick bush, over hilly country and even at
night. Over time, the rhino’s travels will build a map telling
scientists where it wanders in the habitat—its territory.