Question

What is the observation of peacock feather

Answer 1

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No matter the species of peacock, these colorful creatures boast impressively sized and patterned plumage that they fan out for display purposes. It isn't an act of vanity, though -- peacocks fan out their feathers as part of a courtship ritual to attact a mate.

The iridescent plumage of the peacock originates in the fine side branches of the feathers. In general, the diversity of bird feathers' colors can be explained by just two factors: pigments, and simple structures in the feathers that interfere with incident light.