The flamingos feed on larvae, small insects, red and green algae, mollusks, crustaceans and small fish. Because of their ability to eat both plants and meat they become omnivores.
Flamingos are pink because the algae they eat are loaded with beta carotene, an organic chemical that contains an orange-red pigment. (Beta carotene is also present in many plants, but especially tomatoes, spinach, pumpkins, sweet potatoes and, of course, carrots). The mollusks and crustaceans eat the same carotenoids.
The level of carotene (organic pigment) in their food varies in different regions of the world, which is why American flamingos are usually bright red and orange, while the pink ones The drought-affected little crane of Lake Nakuru in central Kenya has a lighter pink color.
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