Actually, in some ways, winter is the best time to take your Beckers out - no bugs, in particular, black-legged ticks, beer stays cold in the pack all day, less soccer moms to cast you and your Becker a suspicious glance. It's also an excellent time of year to continue your plant identification study. There are at least a couple of books dedicated to plants in the winter. By studying their winter corpses, you can learn quite a bit about some plants.
Also a good time to gather cordage material, Indian Hemp and Milkweed to name a couple; hand drill material (Jerusalem Artichoke, Teasel, etc.)
Because ponds and other bodies of water freeze over, you can gain access to areas that are impossible to reach at other times.
Want to hone your tracking skills, snow can be your friend.
Want to expand your shelter building skills, once again, snow shelters fill the bill.
Just a couple of things off the top of my head. And, of course, Beckers don't feel the cold
Doc