The coloration of a flamingo is primarily pink, which is a result of their diet rich in carotenoid pigments found in the algae and crustaceans they consume. The pigments, particularly canthaxanthin and beta-carotene, are responsible for the vibrant pink hues associated with flamingos. Initially, flamingos hatch with gray feathers, and their coloring changes over time as they feed on their natural diet. The intensity of the pink coloration can vary based on the availability of these pigments in their environment and their overall health. Brightly colored flamingos may also serve as an indicator of their reproductive fitness to potential mates.