Kanwar Lake in Begusarai, formerly a haven for migrating birds, currently fighting for its life

Once a haven for migratory birds, Asia's largest freshwater oxbow lake, Kanwar, located in Bihar's Begusarai, is gradually disappearing. An oxbow lake is a curved lake formed alongside a winding river as a result of erosion and sediment deposition over time. Oxbow lakes are typically crescent-shaped and are common features in floodplains and low-lying areas near rivers. The lake, which used to be a popular tourist spot, has fallen victim to encroachments and is now battling for its existence.  Originally spread over nearly 7,000 hectares, the lake has served as a destination for migratory birds and was home to several aquatic species. It was first declared a protected area by the state government in 1986, and later, a sanctuary by the Central Government, to prevent poaching of birds.