From 11:00PM PDT on Friday, July 1 until 5:00AM PDT on Saturday, July 2, the Shmoop engineering elves will be making tweaks and improvements to the site. That means Shmoop will be unavailable for use during that time. Thanks for your patience!
We have one last metaphor for you to check out here. It's not a huge deal, but it's definitely part of the wordplay in this poem. The song of the bird isn't really a crystal stream. The speaker is subtly comparing music to something you can see, a little sparkling stream of water.
Line 85: Everywhere in this poem the speaker blurs the lines between our senses, between what we see, hear, smell, and feel. It creates a beautiful, exciting, but maybe also overwhelming world of feeling, which helps us to understand exactly how much this bird means to our speaker.