They rise from the fields like smoke in great, swirling currents, rising higher and spreading wider in the sky than one’s field of vision can encompass. One fluid, recurved sweep of ten thousand of them passes through the spaces within another, counterflying flock; while beyond them lattice after lattice passes, like sliding Japanese walls, until in the whole sky you lose your depth of field and feel as though you are looking up from the floor of the ocean through shoals of fish.
