The colour of fitness: plumage coloration and lifetime reproductive success in the tawny owl.

@article{Brommer2005TheCO,
  title={The colour of fitness: plumage coloration and lifetime reproductive success in the tawny owl.},
  author={Jon E Brommer and Kari Ahola and Teuvo Karstinen},
  journal={Proceedings. Biological sciences},
  year={2005},
  volume={272 1566},
  pages={
          935-40
        }
}
We studied variation in plumage colour and life history in a population of tawny owls (Strix aluco) in southern Finland, using 26 years of data on individually marked male and female owls. Colour was scored on a semi-continuous scale from pale grey to reddish brown. Colour scoring was repeatable and showed a bimodal distribution (grey and brown morph) in both sexes. During the study period, colour composition was stable in the study population in both sexes. The sexes did not mate assortatively… CONTINUE READING
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