Question: why are flamingos pink

Kevin Mahon answered on 18 Jun 2012:

Flamingos are pink or orange or white depending on what they eat. Flamingos eat algae and crustaceans that contain pigments called carotenoids. For the most part, these pigments are found in the brine shrimp and blue-green algae that the birds eat.

Enzymes in the liver break down the carotenoids into the pigmentation molecules that result in a pink coloured flamingo!