By mid-October the geese have taken full possession of Hunters Glen Lake, and the ash trees along the walking paths give up their leaves nearly all at once, usually on the first windy night. Burke Family Lawn Care shows up for that particular week, when a lawn disappears under gold and has to be found again. Leaf cleanup, the last mows of the year cut a little lower, trimming and edging so the borders don't vanish under the drift. Autumn light in Thornton is low and clean, and a lawn that comes out from under the leaves looks like it was waiting for you. Then the rakes go quiet and the grass gets to sleep tidy.