The frontal shield of the moorhen: sex differences and relationship with body condition

  title={The frontal shield of the moorhen: sex differences and relationship with body condition},
  author={F. {\'A}lvarez and C. S´nchez and S. Angulo},
  journal={Ethology Ecology \& Evolution},
  pages={135 - 148}
Moorhens Gallinula chloropus have a conspicuous frontal shield, which is used in competitor assessment, and whose size and colour is testosteronedependent in both sexes. During 2 months in winter we examined sex-related differences in size and colour of the red or red-orange shield and the yellow-tipped bill of free-living adult moorhens, as well as their relationship with indices of body condition (body size, tarsi fluctuating asymmetry, fat index, serum lutein carotenoid concentration, and a… Expand
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