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Avian Warning System
The Siberian jay screeches at predators when they are near, but uses a different call for each deadly intruder (00:42)
Video: Uppsala University
Related:
Wild Things:
Life as We Know It
Dog faces, the history of laughter, snakes, and bird warning calls
August 2009 |
By Joseph Caputo, T.A. Frail, Megan Gambino, Ashley Luthern and Abigail Tucker
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