Capon sending those interesting links.
Did you call me a capon? LOL
You know about the language of birds, right? How much of it is a bunch of new agey hokum & how much of it was earlier human beliefs, I've no idea. But, since the list is *G*GG...
http://www.innerlight.org.uk/journals/Vol24No4/langbird.htm
http://www.thorsons.com/resources/extracts/ex_Secret_language_birds_nozedar.pdf#search=%22language%20of%20birds%22