Carotenoids, Immunocompetence, and the Information Content of Sexual Colors: An Experimental Test

@article{McGraw2003CarotenoidsIA,
  title={Carotenoids, Immunocompetence, and the Information Content of Sexual Colors: An Experimental Test},
  author={Kevin J. McGraw and Daniel R. Ardia},
  journal={The American Naturalist},
  year={2003},
  volume={162},
  pages={704 - 712}
}
Many male birds use carotenoid pigments to acquire brilliant colors that advertise their health and condition to prospective mates. The direct means by which the most colorful males achieve superior health has been debated, however. One hypothesis, based on studies of carotenoids as antioxidants in humans and other animals, is that carotenoids directly boost the immune system of colorful birds. We studied the relationship between carotenoid pigments, immune function, and sexual coloration in… 

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