| Quote #4 When the blackbird flew out of sight, |
Again, the speaker's imagination creates the reality surrounding the blackbird. He's not just amazed by the bird; he's amazed by the circles.
| Quote #5 Even the bawds of euphony |
It's hard to rouse those "bawds of euphony," who usually only get excited by very harmonious sounds and images, but the blackbird has them crying out in amazement.