A threatened wetland : The drying up of Rani Tal in Nepal including the three man-made ponds elsewhere in the Shuklaphanta area has forced the wild animals such as swamp deer, spotted deer and tiger to cross the southern border and plunge into the Mahakali River. Threat to the wetland had started looming the moment the Chaudhari river started changing its course, the main source of replenishment for the lake.