The sanctuary was created following a suggestion by the noted Indian ornithologist Dr. Salim Ali.
It is home to a significant population of mugger crocodiles, also known as marsh crocodiles.
The islets were formed by the construction of a dam across the Kaveri River in the 1600s.
More than 170 bird species have been recorded within the sanctuary boundaries.
The sanctuary functions as an important inland wetland ecosystem in Southern India.
Great stone-curlews can often be spotted camouflaged among the rocks on the islets.
The park is recognized as an Important Bird Area (IBA) by BirdLife International.
Ranganathittu Bird Sanctuary is Karnataka’s largest bird sanctuary, established in 1940 as a protected area within the Kaveri River. The site comprises a cluster of six islets formed by the river’s path, providing a critical nesting and breeding ground for migratory birds. It is a designated Ramsar site of international importance. Visitors primarily explore the islets via guided boat safaris that navigate the river channels. The sanctuary supports a diverse population of marsh crocodiles, which are frequently observed basking on the riverbanks. It serves as a major habitat for species such as the painted stork, spot-billed pelican, and various species of egrets and herons. The sanctuary remains a primary site for ornithological study due to its undisturbed nesting colonies.
From the boat during the guided river cruise, allowing for eye-level shots of water birds and crocodiles.
Wear neutral-colored clothing to avoid startling the birds.
Bring binoculars for better observation of nesting sites on distant islets.
Remain seated and quiet during the boat ride to ensure bird sightings and maintain safety.
Avoid visiting during the peak heat of the afternoon when bird activity decreases significantly.
The sanctuary may temporarily suspend boat operations during periods of heavy flooding or excessive water release from the KRS Dam.
Strictly no littering; keep noise levels low to avoid disturbing bird breeding colonies; do not feed wildlife.
