I've got 2 hives here in PA. I'd been feeding my hives in the early fall, and both were sucking down syrup at a pretty good pace. I filled both feeders with syrup 2 weeks ago. In the meantime, the weather has cooled off and we had the Sandy storm come through, so I'm sure they were closed up inside for much of that time. Made another batch of syrup today and went out to add it to the feeders -- and found that the feeders in both hives have barely been touched. Should I be concerned about this? There is bee activity in both hives (coming and going at the entrance).