One of the themes to which Lawrence Ferlinghetti has often returned is the idea that there is a real America still to be discovered. This becomes the subject of a later poem, “After the Cries of the Birds”. Ferlinghetti's poetry derives from the way in which his honesty and creativity mix with his responses to actuality, be it life in San Francisco, social inequality or oppression, politics or travel. In July 1966 Ferlinghetti, who was already much travelled in the external world, took an internal journey by taking LSD for the first time. There might well be a relationship between this event and “After The Cries Of The Birds”. It is plain enough that the poem is a response to both interior and external voyages and …
Wisker, Gina. "After the Cries of the Birds". The Literary Encyclopedia. First published 21 March 2002; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=6818, accessed 25 April 2015.]