Birds have primate-like numbers of neurons in the forebrain.
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Proc Natl Acad Sci U S A. 2016 Jun 28;113(26):7255-60. doi: 10.1073/pnas.1517131113. Epub 2016 Jun 13.
Proc Natl Acad Sci U S A. 2016.
PMID: 27298365
Free PMC article.