A bird species found in some parts of Western Alaska is believed to emit a natural mosquito repellent with properties similar to DEET, the key ingredient in many commercial repellents. Hector
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/researcher-finds-bird-emits-mosquito-repellent
[2] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmental-science