Surveys in 1981 and 2003 in the Dhorpatan area of western Nepal established 70 calling sites , suggesting substantial numbers exist in this area ( approximately 200 birds ) .
Surveys in 1981 and 2003 in the Dhorpatan area of western Nepal found that there were 70 places where the birds were heard , suggesting that many birds exist in this area ( approximately 200 birds ) .