Chilika is recognized as one of the most important wetlands in the world because it is home to a phenomenal variety of birds. Chilika Lake offers visitors a spectacular display of its colorful avian charms in a thousand different hues presented by over 160 species in the peak season between November and February. The lake and its reed islands teem with nesting birds-white bellied sea eagles, ospreys, golden plovers, sand pipers, flamingos, pelicans, shovellers, gulls, include migratory ones flying great distances from Iran, Central Asia and Siberia.
The large Nalabana Island (Forest of Reeds) covering about 16 sq km in the lagoon area was declared a bird sanctuary in 1987. The core area of about 9 sq km attracts around 400,000 waterfowls of different species. Often underwater, the island gradually emerges with the outset of summer. It is literally a paradise for bird-watchers.
The lagoon hosts over 160 species of birds in the peak migratory season. Birds from as far as the Caspian Sea, Lake Baikal, Aral Seaand other remote parts of Russia, Kirghiz steppes of Mongolia, Central and southeast Asia, Ladakh and Himalayas come here. These birds travel great distances; migratory birds probably follow much longer routes than the straight lines, possibly up to 12,000 km, to reach Chilika Lake.
Another major attraction at Chilika is Irrawady dolphins which are often spotted off Satpada Island. Satpada, bounded by the lagoon on three sides, offers an excellent view and attracts the visitors to its entire 30 km stretch of sand bar. Boats arranged by OTDC are available for both the islands. The lake also supports the local fisherman in earning their living from Chilika's prawn, mackerel and crabs.