They are natural scavengers once abundantly found across Tamil Nadu but in the past three decades the introduction of an anti-inflammatory drug for cattle proved fatal for them.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/drug-ban-gives-vultures-wings-improves-diversity
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vulture
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drugs
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mudumalai-sa
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecology
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife