If you haven't already protected shrubs susceptible to rabbit damage with chicken wire, now is the time to do so. I find February and March prime time for rabbit control, as it is too early for winter-hungry pests to find much green vegetation, but they will seize the opportunity to come out and nibble certain shrubs when we get a warm day.
The following are shrubs and vines in my own yard that rabbits have eaten in late winter:
Rabbits, in the past, have chewed down all the stems of my beautyberry to within 6 inches of the ground! In this case, though, there's no real harm done, since beautyberry blooms on new wood. I prune my beautyberry down to within 6 inches of the ground anyhow, every spring. So sometimes the rabbits just beat me to it!
Chicken wire also comes in handy for protecting spring bulbs, such as crocus bulbs, from squirrel damage. In this case, though, you apply the chicken wire horizontally, not vertically. Just lay the chicken wire on the ground, right over where the bulbs are planted. Weight it down with something, or drive in stakes along the edge to hold it in place.