Ranganathittu Bird Sanctuary (also known as Pakshi Kashi of Karnataka), is a bird sanctuary in the Mandya District of the state of Karnataka in India. It is the largest bird sanctuary in the state, in area, and comprises six islets on the banks of the Kaveri river. The sanctuary has been designated as a protected Ramsar site since 2022. Ranganathittu is located 3 kilometers from the historic town of Srirangapattana and north of Mysore. The sanctuary attracted about 3 lakh visitors during 2016–17. History of the Park Ranganathittu's islets were formed when an embankment across the Kaveri river was built between 1645 and 1648 by the then king of Mysore, Kanteerava Narasimharaja Wadiyar. These islets, originally numbering 25, soon started attracting birds. The ornithologist Salim Ali observed that the islets formed an important nesting ground for a large variety of birds, and persuaded the king of Mysore to declare the area a protected area in 1940. The sanctuary is currently maintained by the Forest Department of Karnataka and efforts are ongoing to improve the sanctuary, including purchasing nearby private land to expand the protected area. In 2014, around 28 square km around the sanctuary was declared as an eco-sensitive zone, meaning that certain commercial activities cannot take place without the government’s permission. Flooding The sanctuary with its islets experience heavy flooding during certain rainy seasons when water is released from Krishna Raja Sagara dam upstream, due to heavy rains. During heavy flooding boating is suspended and tourists are allowed to watch the nesting birds from a distance. Frequent flooding has also damaged some portions of three islands over past few decades. Natural History of the Park Biomes Most of the park is within a riparian area. Flora Riverine reed beds cover the banks of the islands, while the islands themselves are covered in broadleaf forests, with dominant species being Terminalia arjuna (Arjun tree), bamboo groves, and Pandanus trees. Eucalyptus and acacia trees have also been planted, which might lead to long-term eradication of native species. The endemic and threatened lily Iphigenia mysorensis of the family Colchicaceae also grows in the sanctuary. Fauna Birds Roughly 170 bird species have been recorded. Of these, the painted stork, Asian openbill stork, common spoonbill, woolly-necked stork, black-headed ibis, lesser whistling duck, Indian shag, stork-billed kingfisher, egret, cormorant, Oriental darter, spot-billed pelican and heron breed at Ranganathittu regularly. The great stone plover, and river tern