India, Sept. 28 -- A recent survey of dragonflies and damselflies across seven biodiversity parks in Delhi has recorded a rise of around 4,500 individuals compared with last year, though overall species diversity has remained largely unchanged. The survey also spotted a new species this year, the yellow-tailed ashy skimmer, in Yamuna Biodiversity Park.

Scientists documented a total of 13,253 dragonflies and damselflies during the three-day census from September 25 to 27, up from 8,630 sightings in 2024.

The survey covered seven Delhi Development Authority (DDA) biodiversity parks of Yamuna, Aravalli, Neela Hauz, Tilpath Valley, Kamla Nehru Ridge, Tughlaqabad, and Kalindi. Students from Delhi University colleges also participated in the ...