NEW DELHI, India – Sankar Masthri is a monkey catcher. It says so on his business card.

"Monkey, Dog Hunter," it reads, together with little drawings of his targets and his cell phone number. The phone's ringing a lot these days, as India’s capital tries to rid itself of an exploding primate population that’s accused of all kinds of mayhem.

"Problem is, monkeys [are] getting smart," Masthri said, as we watched from a distance as one audacious monkey leaned inside a cage baited with bananas and made away with the food before Masthri could pull a wire to close the hatch and trap it.

Monkey hunters are paid 450 rupees (around $11) per monkey, a good rate by local standards.

The monkeys are taken to reserves outside the city after they are caught. Masthri claimed to have caught scores in recent days, but the day we joined him was clearly slow going.

"Smart monkey," he repeated, shaking his head and again taking cover behind a bush, wire in hand.

There are an estimated 20,000 monkeys in Delhi, and the effort to get rid of them has taken on new urgency after the deputy mayor of Delhi plunged to his death in October while trying to fend off a group of primates on his balcony.