191 bird species have been added to the IUCN red list, the roster of the world's most threatened species
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/birds-swell-ranks-critically-endangered-species
[2] http://admin.indiaenvironmentportal.org.in/category/author/andy-coghlan
[3] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/birds