Mumbai doesn't support bird life , amidst its pollution , industries , trade and commerce . But , there is a lovely bird who loves pollution ! - FLAMINGOES ! Flamingoes are sleek pink birds who migrate to Mumbai every year to enjoy pollution . Pollution helps algae to grow on sea-surface , which is the primary food of flamingoes . Flamingoes , in their early days arew completely white . Algae helps flamingoes to acquire pink colour and adulthood . Since , Sewri is an industrial area , algae mudflats have developed near Sewri coast , which lies on the eastern coast of Mumbai . This is the Reason ! , why lakhs of flamingoes migrate from gulf of Kuchch to Sewri annually .
These large pink birds can be seen in Mumbai from December to March .