The “Language of birds” is also called the “Green Language”. This is a mystical and sacred language of symbols whereby the core of what needs to be said, is actually not said, and is used as a ‘living’ language in Alchemy and other esoteric subjects. To many, the language of birds is nothing more than a series of codes , texts and phrases, which pass by in daily conversation. Those with ears that “hear” the secret and perfect language are offered the key to perfect knowledge.
The Alchemists used symbols of birds such as – the Black Crow, White Swan, Peacock, Pelican, and Phoenix – to describe certain stages of the alchemical process.
Hark, love, while through this wood we walk,
Beneath melodious trees,
How wrens with redbreasts ever talk
What tuneful words they please…
No graybeard linguist, love, could vie
With our large learning, then!
You’d speak to me in Redbreast; I
Would answer you in Wren!
~Edgar Fawcett, “Bird-Language,” Songs of Doubt and Dream, 1891