Pollution, algal growth and disrupted tidal flows threaten key bird habitats Flamingos could arrive in Mumbai and Navi Mumbai earlier than usual this winter, potentially in larger numbers, but environmentalists warn that deteriorating wetlands may leave the migratory birds with inadequate feeding grounds. Polluted water, excessive algal growth and disrupted tidal flows threaten three key habitats DPS Flamingo Lake, NRI Wetland and TS Chanakya Wetland raising concerns over the region’s preparedness for the annual arrival of the pink visitors, NatConnect Foundation said. Senior scientist Mrugank Prabhu of Srushti Conservation Foundation expects the birds to arrive early, possibly in greater numbers. A deficient monsoon in Kutch could affect water levels and food availability, prompting flamingos to seek alternative feeding grounds sooner than usual, said Prabhu, who has been studying bird movements along the Central Asian Flyway. NatConnect director B N Kumar said the three wetlands were not adequately prepared to receive the birds, which attract birdwatchers and nature enthusiasts to Navi Mumbai and the Thane Creek Flamingo Sanctuary (TCFS), a Ramsar site. The concerns follow private laboratory tests commissioned by NatConnect earlier this year, which found elevated pollution indicators in water samples collected from all three sites. Kumar said flamingos had moved north to Sambhar Lake in Rajasthan during the previous migratory season, while arrivals in the Mumbai region began in smaller batches. He cautioned that deteriorating wetlands could fail to provide suitable feeding grounds if the birds arrived early in search of alternative habitats. NRI Wetland in Nerul has been affected by extensive algal growth, while neighbouring TS Chanakya Lake faces waterlogging and drainage problems. Environmentalists attribute these issues to encroachment and interference with natural water flows. Kumar called for urgent restoration, expressing concern over delays in securing formal legal protection for the wetlands.
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