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footprints of the Amur tiger have been discovered many times in Wangqing since 2008, this is the first time that a camera trap set up in the reserve has captured photos of the rare species

Experts will try to identify the individual tiger photographed by comparing it with photos of Amur tigers taken previously in Hunchun.

Amur tigers were once widespread in northeast China

Estimates put the current wild Amur tiger population in Northeast China

between 18-24 individuals

The adjacent forested habitat of the Russian Far East holds more, between 430-500 tigers.

home to about 121 tigers. People live on the park's borders

analysis of the thousands of images show that people and tigers are walking the same paths, albeit at different times

Tigers typically move around at all times of the day and night

discovered that the tigers had become creatures of the night.

camera's infrared lights document a pronounced shift toward nocturnal activity

People in Nepal generally avoid the forests at night

it appears tiger population numbers are holding steady despite an increase in human population size

Tigers need to use the same space as people if they are to have a viable long-term future. What we're learning in Chitwan is that tigers seem to be adapting to make it work."

There appears to be a middle ground where you might actually be able to protect the species at high densities and give people access to forest goods they need to live

collect firewood, soldiers patrol forest roads to deter poachers and other criminals, and a growing number of ecotourists visit the area each year

conducted their research from January through May—during the dry season before the monsoon rains began—in both 2010 and 2011, each year deploying at least 75 camera traps spaced no more than 1 kilometer apart.

And overall tiger numbers in the park didn't drop when more humans were around: In 2010, the team estimates, the area hosted about 4.4 tigers per 100 square kilometers. The next year, that number jumped by about 40%—even though the number of humans measured by the “camera traps” rose by 55%.

analyses show that tigers were more likely to be found at sites away from human settlemen

also found that the tigers in and around Chitwan park were much more likely to be active at night than tigers living elsewher

Timesharing the environment might not work well with many threatened species or in many areas

the notion of humans and endangered animals sharing the same terrain by shifting their behavior—and particularly by shifting when each species uses the habitat—should be incorporated into conservation plans when it makes sense

The goal is to recreate what we call common sense—the ability to learn things without being specifically taught

NEIL uses advances in computer vision to analyze and identify the shapes and colors in pictures, but it is also slowly discovering connections between objects on its own

the computers have figured out that zebras tend to be found in savannahs and that tigers look somewhat like zebras

In just over four months, the network of 200 processors has identified 1,500 objects and 1,200 scenes and has connected the dots to make 2,500 associations

Some of NEIL's computer-generated associations are wrong

"rhino can be a kind of antelope,"

"actor can be found in jail cell"

"news anchor can look similar to Barack Obama."

having a computer make its own associations is an entirely different type of challenge than programming a supercomputer to do one thing very well, or fast

humans constantly make decisions using "this huge body of unspoken assumptions," while computers don

humans can also quickly respond to some questions that would take a computer longer to figure out

"Could a giraffe fit in your car?" she asked. "We'd have an answer, even though we haven't thought about it" in the sense of calculating the giraffe's body mass

In the future, NEIL will analyze vast numbers of YouTube videos to look for connections between objects