Economy Bye, bye birdie: A bird sanctuary could disappear as Pune metro speeds ahead Updated : April 18, 2019 05:04 PM IST Over a 100 species of birds and around 30 species of butterflies have been recorded in Pune’s Dr. Salim Ali Bird Sanctuary, report birdwatchers and nature enthusiasts. From garbage to road construction, the sanctuary has faced several threats, with the latest being an elevated metro line. However, it is water, not infrastructure, that is high on the environmental concerns of Pune’s voters, according to a survey. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.