"Why are flamingos pink?
Feather color varies with species, ranging from pale pink to crimson or vermilion. Caribbean flamingos have the brightest coloration: crimson or vermilion. The Chilean flamingo is pale pink.
A flamingo's pink or reddish feather color comes from its diet, which is high in alpha and beta-carotene. People eat beta-carotene when they eat carrots. "