Why is a flamingo pink?

Flamingos are pink if they have a lot of food containing beta carotene in their diet (i.e shrimp).

This answer is completely wrong! I'm pretty sure shrimps do not contain beta carotene. Beta carotene is an orange (not pink) pigment found in carrots and is a precursor to vitamin A. Whereas Astaxanthine is a pink pigment produced by plants and algae. It is Astaxanthine that give Flamingos their pink color. When shrimps eat algae the astaxanthine contained in them is incorporated into their chitin shell. When the Flamingos eat the shrimps the flamingos then incorporate the pigment into their feathers. Incidentally this is also why the meat or muscle of an adult wild salmon is pink. Farmed salmon raised on meal lacking the pigment have white appearing muscle. This is also why when you cook shrimp or lobster or crab they turn bright pink to red in color. Shrimps and lobsters don't look pink at first due to proteins in the shell obscuring the pigment. When the protein is denatured (cooked) it reveals the wonderful color. This is also true of the leaves of fall. When the green chlorophylls in the leaves are destroyed the reds and oranges and yellows of fall are revealed in their splendor! What about pink you say? I'll explain this next.

Both astaxanthine and beta carotene are Carotenoids, a group of pigment molecules produced by plants and algae that range in color from yellow to red (the leaves of fall). They help absorb light and pass the energy to chlorophyll. They can be divided into two groups, xanthophylls and carotenes. The former containing oxygen and the later lacking. The coloration of these molecules is due to the length of their carbon chain with alternating single and double bonds, called conjugation. This chain absorbs light of various colors (energies). The more highly conjugated or the longer the chain the more red the pigment looks. The shorter the chain the more yellow the pigment. Changing the length changes the light absorption spectrum and therefore the color. Vitamin A (retinol) alpha and beta carotene, lycopene, and lutien are all vitamins and antioxidants as well as Carotenoids.

Improve Answer View existing comments for "Why is a flamingo pink?" Watch Question

First answer by ID416292405. Last edit by Lanceearlhaines. Contributor trust: 0 [recommend contributor]. Question popularity: 21 [recommend question]

Research your answer:

Answers.com > Wiki Answers > Categories > Science > Biology > Zoology or Animal Biology > Why is a flamingo pink?

Our contributors said this page should be displayed for the questions below. (Where do these come from)
If any of these are not a genuine rephrasing of the question, please help out and edit these alternates.
Why are flamingo pink?  What color is a flamingo?  Are flamingo's born pink?  What makes flamingo's pink?  What makes a flamingo pink?  What does flamingo symbolize?  How do the flamingo turn pink?  What is a baby flamingo called?  Do flamingo's turn pink by eating shrimp?  Is it true that flamingo's are pink because they eat so much shrimp?