This was Nepal's annual removal of rhinos from the relatively crowded confines of Chitwan to other parks in the country.

ECONOMIST: The kindness of hunters

The most rhinos live in Chitwan National Park, where their number has increased from 408 in 2008 to 503 in 2011.

UNESCO: OFFICE IN KATHMANDU

Now, despite the activities of poachers (21 rhinos stolen in Chitwan in the past 12 months), Nepal has a healthy stock of 600.

ECONOMIST: The kindness of hunters

The Chitwan National Park in southern Nepal has more than 500 rhinos, up from half that figure few years ago, and more than 125 tigers.

BBC: Attacks prompt Nepal to cap wildlife growth

To protect the endangered creatures, the chief warden at Chitwan has quasi-judicial powers, including the authority to convict and jail alleged poachers for up to 15 years.

ECONOMIST: Counting the cost of success

Last month, local people in Chitwan, southern Nepal, staged a strike and demanded that a rogue elephant be killed after it had taken the lives of three people.

BBC: Attacks prompt Nepal to cap wildlife growth

In Royal Chitwan National Park, near Nepal's south-western border with India, dozens of elephants were tramping through the thick jungle, their riders carrying rifles and chattering on walkie-talkies.

ECONOMIST: The kindness of hunters

Drones and other successful anti-poaching measures have also been used by the WWF in nearby Chitwan National Park in Nepal, where the hunting of one-horned rhinos has been drastically reduced.

BBC: India deploys drones to save rhinos in Assam state

Scientists are concerned about the spread of the "weed" in the Chitwan National Park because it has been a huge conservation success story, with nearly 100 breeding adult tigers and more than 400 rhinos roaming within its territory.

BBC: Invasive species have a 'delayed legacy', says report