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These two links may be helpful.  

http://www.sibleyguides.com/bird-info/the-basics-of-identifying-bird-sounds/trilled-songs-of-eastern-birds/

http://listeninginnature.blogspot.com/2014/05/how-many-trills-can-you-remember.html <http://listeninginnature.blogspot.com/2014/05/how-many-trills-can-you-remember.html>


Mike Taylor, Marble Hill, Bollinger Count


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The Audubon Society of Missouri's Wild Bird Discussion Forum
ABA Birding Code of Ethics
http://www.aba.org/about/ethics.html
ASM Fall Meeting: September 25-27, 2015 at Lake of the Ozarks State Park
Details and online registration at: http://www.mobirds.org/ASM/Meetings.aspx