Calling by Concluding Sentinels: Coordinating Cooperation or Revealing Risk?

• Linda I. Hollén ,

  * E-mail: linda.hollen@bristol.ac.uk

  Affiliation School of Biological Sciences, University of Bristol, Bristol, United Kingdom

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• Matthew B. V. Bell,

  Current address: Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, United Kingdom

  Affiliation Department of Zoology, University of Cambridge, Cambridge, United Kingdom

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• Alexis Russell,

  Current address: Department of Biological Sciences, Macquarie University, Sydney, Australia

  Affiliation Pied Babbler Research Project, Kuruman River Reserve, Vanzylsrus, Northern Cape, South Africa

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• Fraser Niven,

  Affiliation Pied Babbler Research Project, Kuruman River Reserve, Vanzylsrus, Northern Cape, South Africa

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• Amanda R. Ridley,

  Affiliation Centre of Excellence, Percy FitzPatrick Institute, University of Cape Town, Rondebosch, South Africa

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• Andrew N. Radford

  Affiliation School of Biological Sciences, University of Bristol, Bristol, United Kingdom

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