It is late in the year to find out, that is for sure. I'm about 40 miles away with way too much on my plate. I'm trying to find a place close by that I can keep them so I can keep better check on them during the winter. I get to see them most every weekend during the fall because they are on the property I hunt. But after December I don't get down there nearly as often as I would like. Of course I'm not sure I would have been able to do anything about it to begin with. My feeling and I will check this out this weekend is that they just starved. They had plenty of honey going into the winter but we had a stretch of cold that the temp never got above 22 or 23 for twenty-some days in a row. I just don't think they could break and move to fresh frames. Anyone have thoughts on that theory? The best I can come up with at this time.