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Last updated on April 20, 2014 at 14:04 EDT

Song Sparrow Giving Soft Songs and Wing Waves

February 13, 2013

Song sparrow giving soft songs and wing waves in response to a simulated intruder. This is from a trial in the experiment reported in Akçay, Ç., Tom, M., Campbell, S. E. & Beecher, M. D. Song type matching is an honest early threat signal in a hierarchical animal communication system. Proceedings of the Royal Society of London, Series B.

credit: University of Washington