A scientist places a radio collar on a tiger. Olga was the first tiger to be fitted with a radio collar.

Cat Tracks

Quigley hoped Olga’s collar would help him learn more about Siberian tigers. The speed of the beeps from her collar would tell him about the tiger’s habits. It would also tell Quigley when she was sleeping, hunting, moving to a new territory–or dead.

Quigley needed to learn all he could about Olga’s habits. His goal is to keep tigers like her from disappearing from the forest forever, or from becoming extinct.

Quigley wants to protect Siberian tigers because he knows what has happened to other tigers. In the last century, three species, or kinds, of tigers have died out. Only five species, including Siberian tigers, are left.