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Vocal abilities lost, found and drowned out

Reports from the meeting of the American Ornithologists' Union

11:13pm, August 17, 2009

Researchers convened August 12-15 at the American Ornithologists’ Union 2009 meeting in Philadelphia, Pa. They presented their latest findings on the evolution of female songs, the unexpected vocal anatomy of sage grouse and the perils of traffic noise for forest birds.

Among birds that have left behind staying in one region and breeding in monogamous, territorial pairs, such as migratory orioles and colonially breeding grackles, females typically have lost their songs.TO SING OR NOT TO SING

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