Date:
December 11, 2014
Source:
Duke University
Summary:
A massive international effort to sequence and compare the entire genomes of 48 species of birds, representing every major order of the bird family tree, reveals that vocal learning evolved twice or maybe three times among songbirds, parrots and hummingbirds. Even more striking, the set of genes employed in each of those song innovations is remarkably similar to the genes involved in human speaking ability.
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