Paul, Sanjay Kumar, Chayanika Roy, Kaustav Dutta Chowdhury, and Santi Ranjan Dey. 2017. “A Review on Ornithology of Kolkata Metropolitan Area”. International Journal of Experimental Research and Review 11 (June):52-55. https://qtanalytics.in/journals/index.php/IJERR/article/view/1287.