Population of house sparrows is fast declining due to dangers posed to their survival by a host of factors including mobile phone towers, prompting a UK-based forum to enlist the tiny birds in the 'Red List' of endangered avian species'.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/house-sparrow-listed-endangered-species
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-herald-bangalore
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/birds
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sparrow