The Rusty Plumage Coloration of Juvenile Gyrfalcons Is Produced by Pheomelanin and Its Expression Is Affected by an Intracellular Antioxidant

@inproceedings{Galvn2015TheRP,
  title={The Rusty Plumage Coloration of Juvenile Gyrfalcons Is Produced by Pheomelanin and Its Expression Is Affected by an Intracellular Antioxidant},
  author={Ismael Galv{\'a}n},
  year={2015}
}
—Juveniles of many diurnal raptors exhibit a characteristic rusty plumage coloration whose biochemical basis has never been determined. Using the Gyrfalcon (Falco rusticolus) as a model species, we analyzed feathers by Raman spectroscopy and showed that the rusty color is due to the presence of the pigment pheomelanin, which was also observed in the feathers of a juvenile Peregrine Falcon (Falco peregrinus). We experimentally modified the expression of the rusty plumage coloration by treating… CONTINUE READING

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