Environmental activists in the city have initiated a study on the various types of birds in the city that will involve a six-month long survey during the migrating season of the birds from November
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/survey-be-undertaken-study-migrating-birds
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-madurai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/migratory-species
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/birds
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biodiversity
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife