A study by the World Wide Fund
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/wwf-study-flying-foxes-launched
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-indian-express-chennai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wwf
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu