Fifteen species of birds seen in India have been declared critically endangered by the International Union for Conversation of Nature (IUCN) for 2013.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/15-bird-species-india-critically-endangered-international-report
[2] http://admin.indiaenvironmentportal.org.in/category/author/b-sivakumar
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/birds
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bustard
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticide-use
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hydroelectricity
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bombay-natural-history-society-bnhs
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vulture
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-environment-and-forests-moef
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/haryana
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/west-bengal
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/migratory-species
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife