What is the setting of Jarrell's, The Bat Poet?

The story opens on a porch in a place where animals can talk and write, and humans are virtually non-existent.

From the moment the bat begins to narrate his thoughts, the place where he resides becomes irrelevant. He could be living on any porch in any place, which contributes to the universality of the tale. The bat's thoughts and experiences are those of everyone.