At the AR gtg I had the pleasure of meeting Nancy (Birdie) and she got be thinking about birds and how it would be nice to listen to the sounds and say, "that's a so & so." Anyway she did that several times so naturally and enthusiastically I thought surely there is something other than CD that help you with learning calls and identifying them.
This site does not show the bird but helps you hear them in different regions. http://www.komando.com/coolsites/index. ... mpaign=end I'm sure Birdie has some other sites but I thought more of you might be interested.