How do flamingos turn pink?
Every year starting winters, tens of thousands of flamingos make their way to a little known jetty point in Mumbai. They travel from the Rann of Kutch, which is their breeding ground and make way to two areas in Mumbai, one is a less known jetty point for their morning feeding and the other is their evening spot near New Bombay. when they arrive here in early winter, their wings are a shade of white, but during thier departure they become a pink.
How does this happen? Our guide from BNHS explained that these muddy flats near Mumbai are filled with blue green algae from which the birds’ digestive tract extract the pigment from the carotenoid and an algae rich diet ensures the pink colour to the flamingos. those better the diet, the pinker will be the color to the flamingos.
Rann of Kutch is a good breeding spot for these flamingos but is not rich in blue green algae. The birds travel hundreds of miles till Mumbai to get their adequate dose of nutrition.
However, the story could be short-lived as there are plans to create a trans harbour link over this area and the effects of that on the ecosystem, diversity and habitat is not known.