A Touch of Rouge
A flamingo's pink color comes from pigments concentrated in the brine shrimp and other foods it eats. How does a flamingo attract a mate after its feathers fade? Cosmetics, according to a study in Spain. Males and females secrete pigments from a gland near the tail, and they rub the secretions on their feathers, brightening their color during breeding season. Once a flamingo has found a mate, it spends less time applying makeup.
Learn more about the greater flamingo at the Encyclopedia of Life.