Alison Calder's poetry is known for shining the light of the poet's curiosity on all manner of "natural occurrences," which nevertheless stand out.Again, as with her first book, Wolf Tree, this collection is about what exists at the edges of human experience, what's out there but is largely unseen by the average human being - animals, the line a receiver makes running down a football field, the calligraphy of pheasant wings in the snow. It's about ghosts, how things operate as ghosts to us now, in this age - things that might have, in another age, occupied a more central place in our lives.