The critically endangered high brown fritillary had its best summer in a decade in 2014, with numbers rising 180% in a year thanks to conservation efforts
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/uks-most-endangered-butterfly-back-brink
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/guardian-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/butterflies
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-kingdom-uk
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/europe