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Predation: Prey plumage adaptation against falcon attack.

Alberto Palleroni1, Cory T Miller, Marc Hauser

  • 1Primate Cognitive Neuroscience Laboratory, Department of Psychology, Harvard University, Cambridge, Massachusetts 02138, USA. aliparti@wjh.harvard.edu

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|April 23, 2005
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Summary
This summary is machine-generated.

Certain feral pigeon plumage colors offer a survival advantage against peregrine falcon attacks. This heritable trait acts as an anti-predator adaptation, improving survival during high-speed aerial pursuits.

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Area of Science:

  • Avian ecology
  • Evolutionary biology
  • Predator-prey dynamics

Background:

  • Feral pigeons (Columba livia) exhibit diverse plumage types.
  • Peregrine falcons (Falco peregrinus) are swift predators posing a significant threat.
  • Plumage coloration may influence pigeon survival rates.

Purpose of the Study:

  • To investigate the selective predation patterns of peregrine falcons on feral pigeons.
  • To determine the impact of pigeon plumage coloration on survival rates.
  • To assess if plumage color is an heritable anti-predator adaptation.

Main Methods:

  • Quantitative field observations of pigeon-falcon interactions.
  • Experimental manipulations to assess prey selection.
  • Analysis of plumage coloration as an independently heritable trait.

Main Results:

  • Peregrine falcons exhibit selective prey choice, targeting specific pigeon plumage types.
  • Pigeon plumage coloration significantly affects survival rates during falcon attacks.
  • The advantageous plumage color is an independently heritable trait.

Conclusions:

  • Plumage color in feral pigeons is a key factor in surviving peregrine falcon predation.
  • This coloration functions as an anti-predator adaptation against high-speed aerial attacks.
  • The heritability of this trait suggests strong selective pressure from falcon predation.