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Published daily in Bend, Oregon, by Western Communications, Inc. Copyright 2007.
By Amina Khan / The Bulletin
September 5, 2011
LOS ANGELES — Male songbirds that sing in a low, “sexy” voice are most likely to snag mates, but noisy human environments are cramping their style, forcing some species to sing shrilly to pierce the auditory urban blight. Now, Dutch scientists have shown that male great tits can overcome this....
