Actually, bears often wake from hibernation during the winter. They don't actually 'hibernate' either, in the purest sense of the word. It is unusual to see a bear that early, but it looks like maybe a two year-old, or at best an early born from last year. Its very thin, which would suggest that it didn't stock up enough last fall, hence it had to wake early and find some food. I don't think that momma is anywhere around..but watch your back just the same!
Survival Lesson of the Day:
Remember...black bears eat carrion...fight for your life and you just may keep it...play dead and he'll still take a taste.