"I know noble accents
And lucid, inescapable rhythms;
But I know, too,
That the blackbird is involved
In what I know.

When the blackbird flew out of sight,
It marked the edge
Of one of many circles.   

At the sight of blackbirds
Flying in a green light,
Even the bawds of euphony
Would cry out sharply."

--Wallace Stevens, from Thirteen Ways of Looking at a Blackbird