Foraging site displacement in common crane flocks

  title={Foraging site displacement in common crane flocks},
  author={Luis M. Bautista Sopelana and J. C. Alonso and Javier A. Alonso},
  journal={Animal Behaviour},
Optimal foraging theory predicts that an individual should resort to intraspecific kleptoparasitism when this foraging strategy helps to maximize its intake rate. Thus aggressor and victim should be foraging at lower and higher rates, respectively, than the flock average (intake rate maximization). Independent of the maximization principle, moreover, an aggressor should attack when its intake rate falls below a threshold critical for survival, and select a victim foraging at an intake rate high… 

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