Nondestructive Raman spectroscopy confirms carotenoid-pigmented plumage in the Pink-headed Duck

@inproceedings{Thomas2016NondestructiveRS,
  title={Nondestructive Raman spectroscopy confirms carotenoid-pigmented plumage in the Pink-headed Duck},
  author={Daniel B. Thomas and Helen F. James},
  year={2016}
}
ABSTRACT A small group of pigment classes is responsible for the wide range of plumage colors in modern birds. Yellow, pink, and other “warm” feather colors of many species are attributed to carotenoid pigments, a plumage trait that has an uneven distribution across modern bird species. Carotenoid plumage pigments are especially rare among fowl (superorder Galloanseres), and until recently, the Pink-eared Duck (Malacorhynchus membranaceus) from Australia provided the only evidence that any… 
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