kolkata the fourday city nature challenge cnc from april 28 to may 1 has led to recording of over 900 species of flora and fauna in the city members of green action group nature mates which was the nodal agency for the kolkata event felt the number could surpass 1000 when the final tally arrives later in the weekseveral hundred citizens including students from several colleges participated in the cnc an international effort for people to find and document plants and wildlife in cities across the globe this is the first time kolkata participated in the challenge that was initiated in the us in 2016 according to data collated till tuesday 71 species of birds 46 species of butterflies seven species of reptiles 6 species of birds 492 species of plants and various others comprising insects like moths bees ants wasps bugs beetles crustaceans like crabs prawns shrimps earthworms fishes spiders and mushrooms were photographed and recorded on the inaturalist platform the images did not include potted plants pets or peopleevery taxa has been recorded in kolkata starting from tiny ants to bigger order of life top hotspots in kolkata where the largest number of species were spotted include rabindra sarobar central park in salt lake eco tourism park in new town and maidan said nature mates wildlife researcher debarpan datta biodiversity was found to be healthy on any premises that had a decent green cover like schools and colleges with gardens lawns and playgrounds among the rare trees that were spotted in the past four days include baobab in the maidan and yellow palash in salt lakes central park