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Subject:

Songbirds Prefer the Latest Tunes

From:

Jim and Ann Nelson

Reply-To:

Jim and Ann Nelson

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