Why fight? Socially dominant jackdaws, Corvus monedula, have low fitness

@article{Verhulst2004WhyFS,
  title={Why fight? Socially dominant jackdaws, Corvus monedula, have low fitness},
  author={Simon Verhulst and H. Martijn Salomons},
  journal={Animal Behaviour},
  year={2004},
  volume={68},
  pages={777-783}
}
Social dominance is intuitively assumed to be associated with higher fitness, because social dominance implies better access to resources. We found that, in a colony of jackdaws, the dominant males consistently produced fewer fledglings, which had lower chances of survival to 1 year of age. Laying date and clutch size were independent of dominance, but females that mated with dominant males were in poorer condition and laid smaller eggs. Parental survival was independent of social dominance… Expand
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