Four short lines, and a strange little picture: a huge ear sitting on an otherwise ordinary head. The title, "Auricle," is another word for the outer part of the ear, so the poem is quietly pointing at the very thing it describes.
What makes it interesting is the last two lines. The ear "had some business / with the urge to be." That's an odd, slightly funny way to put it. It's as if the ear has its own errand, some unfinished dealings with the simple drive to exist. The ear stops being just a body part and starts to feel like it has a purpose, even a will.
The speaker doesn't tell us how to feel, and the tone stays calm and observant. The mood is playful but also a little eerie. An oversized ear suggests listening, and the poem seems to hint, judging by the imagery, that being alive means being open and attentive to the world, even when everything else about us looks ordinary.