In high Tibet, patrol officers protect wildlife

Patrolling is vital in the reserve, a stable home to many rare species such as wild yaks, argali, Tibetan antelopes, black-necked cranes, snow leopards and Tibetan wild asses. Tharchen helps protect them from hunters and flu epidemic — from unpredictable damage to the wetlands.

With their motorbikes, telescopes and notebooks, patrol officers leave their footprints in every corner of the grassland. Every year, June is the busiest time, as that's when the female Tibetan antelopes give birth.