After a still, cold night the snow out around Kern Reservoir keeps a record of itself: rabbit tracks, a fox line, one set of boot prints, nothing else. Windsor's streets look about the same at that hour, and First Choice Wildlife Services goes to work on them — plowing drives, clearing walks and entries, opening lots before the day starts asking questions. Cold here has a dry, glittering quality, and the snow it leaves will move easily for anyone who gets to it early enough. By sunrise the drives are open, the walks are down to bare concrete, and everybody else gets an ordinary morning. That's the job.