Carotenoid
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Carotenoids are yellow, orange, and red organic pigments that are produced by plants and algae, as well as several bacteria, archaea, and fungi. Carotenoids give the characteristic color to pumpkins, carrots, parsnips, corn, tomatoes, canaries, flamingos, salmon, lobster, shrimp, and daffodils. Over 1,100 identified carotenoids can be further categorized into two classes – xanthophylls and carotenes.
Ingesting carotenoid-rich foods affects the plumage of flamingos.
The orange ring surrounding Grand Prismatic Spring is due to carotenoids produced by cyanobacteria and other bacteria.
Yellow and orange leaf colors in autumn are due to carotenoids, which are visible after chlorophyll degrades for the season.
Flamingo
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Flamingos or flamingoes are a type of wading bird in the family Phoenicopteridae, which is the only extant family in the order Phoenicopteriformes. There are four flamingo species distributed throughout the Americas, and two species native to Afro-Eurasia.
Many molecular and morphological studies support a relationship between grebes and flamingos.
American and Chilean flamingos in captivity
Flamingos in flight at Río Lagartos, Yucatán, Mexico