Rajkot: A nationwide netbased survey on house sparrow has been launched by Bombay Natural History Society (BNHS), Mumbai, from April 1. Bird Conservation Society, Gujarat (BCSG), which is one of the 10 partnering institutions in this two-month long survey, has appealed to the people to contribute their data to this important study. BCSG has been working for the promotion of bird watching as a hobby and creating awareness about the importance of conservation.