Even in January it is possibile to find subjects in the outdoors to photograph. A recent trip to Peebles Island found me focusing on a downed tree limb with fungus. I used my 300mm lens's close focusing ability to isolate this portion of the branch and a single fungus. And the lens's image stabilization let me shoot at 1/80th of a second with a monopod rather than a tripod.
Canon EOS 30D, EF 300mm f/4L IS, ISO 250, f/8, 1/80 sec.