The speaker of "Route of Evanescence" is totally captured by the hummingbird. Rather than trying to tame nature, or merely describe it as beautiful, the speaker is just shocked by nature, trying to figure out what she just saw. The poem suggests that even the smallest of creatures can be interesting and exhilarating—even spiritual in their effect on us.
The poem substitutes amazement for religious experience. Preach on, Emily!
Hummingbird shummingbird. This poem is more about the mental state of being amazed than it is about nature.