Walking down the block, a nice day. A bird’s entire wing lying on the sidewalk, not a feather missing from the pattern, unruffled. Only a spot of dried blood at the head of the humerus where it once attached to the body. The wing the size of a robin’s, probably a victim of one of the huge crows or the occasional hawk in the neighborhood. The sense that life is modular, meant to come apart and recombine.