Problems with using comparative analyses of avian brain size to test hypotheses of cognitive evolution

• Rebecca Hooper ,

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Writing – original draft, Writing – review & editing

  * E-mail: r.c.hooper2@exeter.ac.uk (RH); alex.thornton@exeter.ac.uk (AT)

  Affiliations University of Exeter, Centre for Ecology and Conservation, College of Life and Environmental Sciences, Penryn Campus, Cornwall, United Kingdom, University of Exeter, Centre for Research in Animal Behaviour, College of Life and Environmental Sciences, Streatham Campus, Exeter, United Kingdom

  https://orcid.org/0000-0003-1042-1688

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• Becky Brett,

  Roles Conceptualization, Data curation, Investigation, Methodology, Project administration

  Affiliation University of Exeter, Centre for Ecology and Conservation, College of Life and Environmental Sciences, Penryn Campus, Cornwall, United Kingdom

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• Alex Thornton

  Roles Conceptualization, Investigation, Methodology, Supervision, Writing – review & editing

  * E-mail: r.c.hooper2@exeter.ac.uk (RH); alex.thornton@exeter.ac.uk (AT)

  Affiliation University of Exeter, Centre for Ecology and Conservation, College of Life and Environmental Sciences, Penryn Campus, Cornwall, United Kingdom

  https://orcid.org/0000-0002-1607-2047

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