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Subject:
Songbirds Prefer the Latest Tunes
From:
Jim and Ann Nelson
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Date:
Tue, 10 Jul 2007 17:55:33 -0400
If you think bird songs sound different than when you first heard them years ago, there may be something to it. http://www.livescience.com:80/animals/070710_latest_song.html Jim Nelson Bethesda, MD