Flamingos are usually thought of as pink birds, but they can display bright coral or red plumage as well. Flamingos are wading birds that live in semi-tropical habitats. The flamingo's color comes from beta-carotene in the shrimp or plankton that it eats. A brightly colored flamingo is healthier than a dull-colored one. Thus, the brighter the plumage, the more desireable a mate they are.