As I almost always do with this kind of question, I look to what kind of summer we have had and what the natural food supply is like going into winter. The cool, wet summer has really produced a bountiful natural food supply and birds are reacting to that. Many woodpeckers, especially Red-headeds are driven by acorn supplies and will sometimes concentrate in areas where they are heavy. Rest assured that when times get tougher (low temperatures, ice, snow) they will be at your feeders just as often as any year.