I would lean towards weather being somewhat of a factor. This year I have found 12 sheds with only 6 being this years sheds. We had a really bad cold snap where the temperature was 6 above for a high. I think with this cold snap a lot of bucks lost their horns. I was on a game production area where the deer and elk are fed throughout the winter and I found a matched set and a single side about 5 feet apart, I think that during the cold weather these two bucks bedded right there because food was only 50 yards away. Around here the deer are really getting bad about coming into town and feeding throughout the winter months. Thats just my thoughts on deer sheds.