Tiger reserves are not only the land of tigers, it also possesses a lot of co-predators, avian biodiversity, invertebrates, insects and some unknown natural wonders. It is our duty to create awareness among the people about the biodiversity of the region and its importance in the fight against the environmental challenges facing humanity. A diversity of microhabitats with a hyper- volume niche exists in the Mangals.
The back mangrove possesses a variety of avian diversity; on the other hand, the shoreline ecotone supports the specialists of that particular ecosystem. The primeval forest supports a good number of resident and migratory faunal communities, especially birds. More than 400 species of resident and migratory birds are recorded from Sundarban Biosphere Reserve till now, but there may be many more species hidden in the lap of Mother Nature which is yet to show itself to the human quest.

In pursuance of the same, Sundarban Tiger Reserve along with the 24 Parganas (South) Division organized the Sundarban Bird Festival (SBF) from 2023.