Concealed black or white bands on feathers boost the vibrancy of bird plumage



Summary

New research reveals that hidden black or white bands within bird feathers actually enhance the perceived vibrancy of their overall plumage. These subsurface layers, discovered through advanced imaging techniques, create optical illusions through complex light scattering and interference. Black bands deepen color saturation while white bands enhance brightness, both contributing to a bird’s visual appeal. This “structural iridescence” provides an evolutionary advantage, potentially aiding in mate selection and camouflage. The finding challenges traditional understanding of plumage coloration, highlighting the role of microscopic structures in shaping avian appearance.

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