Why Blue Pigment Is So Rarely Found in Nature

In a vivid episode of the PBS series It’s Okay To Be Smart, host Joe Hanson explained how certain animals like flamingos get their color from what they eat (carotenoids), before moving on to posit the question “Why Is Blue So Rare In Nature?”. After examining the wings of butterflies and feathers of birds, Hanson noted that it’s the structure of the wing and feather rather than the pigment that causes them to appear blue.

Among living things, the color blue is oddly rare. Blue rocks, blue sky, blue water, sure. But blue animals? They are few and far between. And the ones that do make blue? They make it in some very strange and special ways compared to other colors. In this video, we’ll look at some very cool butterflies to help us learn how living things make blue, and why this beautiful hue is so rare in nature.

Lori Dorn
Lori Dorn

Lori is a Laughing Squid Contributing Editor based in New York City who has been writing blog posts for over a decade. She also enjoys making jewelry, playing guitar, taking photos and mixing craft cocktails.