That’s right! Flamingos are pink because of what they eat.
They eat algae and small crustaceans rich in carotenoids, natural pigments that accumulate in their feathers and give them that distinctive pink-orange color. In fact, chicks are born with pale gray plumage, which changes color as they grow.
This all-natural transformation also serves a social function: the most colorful flamingos are often the most attractive to potential mates.