So Few--Natural Blue!

We may have a rainbow of colors in nature, but blue is one that is not very common. The pigmentation of animals usually reflects the chemical composition in the skin or surface. Each color corresponds to a different chemical. Reds, yellows, orange, brown, black all have particular chemical signatures. Blue, as a chemical pigment, is extremely rare. It follows a very different set of chemical rules. You say, “But I’ve seen blue birds and blue butterflies!” Yes, but this is just trickery—you are only seeing what the animal wants you to see. See the video at:


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