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Cultural evolution changes bird song
Date:1/29/2013

Thanks to cultural evolution, male Savannah sparrows are changing their tune, partly to attract "the ladies."

According to a study of more than 30 years of Savannah sparrows recordings, the birds are singing distinctly different songs today than their ancestors did 30 years ago changes passed along generation to generation, according to a new study by University of Guelph researchers.

Integrative biology professors Ryan Norris and Amy Newman, in collaboration with researchers at Bowdoin College and Williams College in the U.S., analyzed the songs of male Savannah sparrows (Passerculus sandwichiensis) recorded over three decades, and found that the songs had changed distinctly from 1980 to 2011.

"The change is the result of cultural transmission of different song elements through many generations," said Norris.

Norris added that the change in tune resembles changes in word choice and language among humans.


Contact: Ryan Norris
rnorris@uoguelph.ca
519-824-4120 x56300
University of Guelph
Source:Eurekalert  

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