How the Morpho Butterfly Changes Color Under Different Lighting

The morpho butterfly demonstrates a unique ability to change the shade of its wings depending on the angle of incident light. This phenomenon is due to structural coloration, not pigments.

Why does the blue color disappear in the dark?

Researchers studied the mechanism of light interference on the insect's wing scales. Without an external light source, the physical phenomenon of wave scattering and reflection is impossible, so the bright metallic sheen disappears.

A detailed analysis of the optical properties of the butterfly's wings is available at the link below.