More recent research indicates the peacock courtship process might ... but it has a unique visual effect: the background feathers appear to shimmer while the eyespots barely move at all.

Male peacock ... black melanin pigment than it would if the surface was flat. The spiders’ luxe looks resemble that of birds of paradise, which also use tiny structures to create ultrablack ...

Peacock spiders in the genus Maratus ... They are also comparable to a bird-of-paradise’s feathers that produce a similarly mesmerizing black, but the mechanisms are slightly different.