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[美文] To avoid humans, tigers take night shift

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Tigers dont have a reputation for being very accommodating, but a new study challenges the long-held conservation belief that these large carnivores need lots of people-free space.

This new understanding is especially critical because, since the start of the 20th century, the tiger population has declined by 97 percent to approximately 3,000 worldwide largely due to loss of habitat from encroaching cities and agriculture.

Captured on camera

Michigan State University graduate student Neil Carter set up motion-detecting camera traps in and around Nepals Chitwan National Park to study human-tiger interaction.

The park, nestled in a valley of the Himalayas and protected by army patrols, is home to about 120 tigers.

But the area is home to people, too. Tourists visit the park and local villagers live on its periphery, where tigers also roam.

Carter says the cameras, at 80 different sites, captured intense activity inside and outside the park.

What we started seeing was tigers were everywhere, people were everywhere and obviously they could not have been in the exact same places at the exact same time because there will be reports of all kinds of conflicts, left and right," he says. "So what we ended up discovering was that the tigers were displacing their time and becoming more active at night instead of during the day.”

Switch to night shift

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