Video PlayerClose
Migratory birds are seen at a lake at Narja village, some 120 kilometers away from Kolkata, India on Jan. 10, 2018. (Xinhua Photo/Tumpa Mondal)
Migratory birds are seen at a lake at Narja village, some 120 kilometers away from Kolkata, India on Jan. 10, 2018. (Xinhua Photo/Tumpa Mondal)