Vehicles pulled off on the side of the Trans Canada with white buckets on their hoods are sure signs that blueberry picking season has arrived. If you're looking to buy blueberries, you can be sure to get some there. Some of you, of course, pick your own. But, this year, many people say that the blueberries were scarce, even in your favorite spots. We thought we'd "pick" an expert to tell us what might be going on. David Percival is director of the Wild Blueberry Research Program and manager of the Wild Blueberry Research Centre at Dalhousie University.