Sexual Dichromatism in the Blue-fronted Amazon Parrot (Amazona aestiva) Revealed by Multiple-angle Spectrometry

@inproceedings{Santos2006SexualDI,
  title={Sexual Dichromatism in the Blue-fronted Amazon Parrot (Amazona aestiva) Revealed by Multiple-angle Spectrometry},
  author={Susana I. C. O. Santos and Brian Elward and Johannes T. Lumeij},
  year={2006}
}
Abstract Seventy-five percent of psittacine species, including the blue-fronted Amazon parrot (Amazona aestiva), are classified as sexually monomorphic. However, this classification is based on the inability of the trichromatic human eye to perceive light in the near-ultraviolet spectrum. Spectrometry is a technique that enables humans to recognize the increased range of color perceived by the tetrachromatic avian eye. By using this technique, researchers have reclassified many avian species as… 

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