Differences in color vision make passerines less conspicuous in the eyes of their predators.

@article{Hstad2005DifferencesIC,
  title={Differences in color vision make passerines less conspicuous in the eyes of their predators.},
  author={Olle H{\aa}stad and Jonas Victorsson and Anders Odeen},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2005},
  volume={102 18},
  pages={6391-4}
}
Sexual selection often favors brighter and exaggerated traits, which also increase the risk of detection by predators. Signals that are preferentially conspicuous to conspecifics would reduce the predation cost of signaling and, therefore, might facilitate the evolution of stronger sexual and social signals. This selective signaling is possible if predators and prey have differently tuned sensory systems. By using a retinal model to compare reflectance from the plumages of Swedish songbirds to… CONTINUE READING
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Spectrogram of a blue tit’s yellow chest (Fig. 2D, point Pc), an example of a color that is cryptic to avian predators but conspicuous to songbirds

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1 Excerpt

The Birds of the Western Palearctic, Concise Edition

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