I think this depends on so many things...animal condition, weather, location etc...I've noticed the same areas are also different from year to year. In an area I watch every year last year at least 40-60% had shed by the 2nd week of January. This year is different, only 10-15% had shed by the 2nd week of January. I have heard the further south you go the later the deer rut & the later they shed. Elk in most areas will start shedding in a week or two & go clear through May. In most areas the deer are shedding right now.