The researchers talked to villagers, conducted wildlife surveys and collected samples from bats and material in the village. (sciencenews.org)
However, it's almost never feasible to count every single individual — so how do the results of wildlife surveys compare to true population size? (sciencedaily.com)
In the Wakhan Corridor they are conducting wildlife surveys with the eventual goal of establishing a protected area. (dotearth.blogs.nytimes.com)