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