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“Birdbrains” should not be ignored in studying the evolution of g

Published online by Cambridge University Press:  15 August 2017

Irene M. Pepperberg*
Department of Psychology, Harvard University, Cambridge, MA


The authors evaluate evidence for general intelligence (g) in nonhumans but lean heavily toward mammalian data. They mention, but do not discuss in detail, evidence for g in nonmammalian species, for which substantive material exists. I refer to a number of avian studies, particularly in corvids and parrots, which would add breadth to the material presented in the target article.

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“Birdbrains” should not be ignored in studying the evolution of g
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