The color pattern and tree climbing behavior of a Black-and-white Warbler make me think of a White-breasted Nuthatch in a Zebra suit. That is, however, where any similarity (if you can even call it that) ends.
I took these photos of a Black-and-White Warbler while hiking the South River Falls Trail (pdf) in Shenandoah. The first shows an attempt at grabbing a meal. The second is a very brief moment of rest for the bird. Usually they are very active and nearly always moving.