Birch tree bark is usually whitish-gray, silver, or sometimes red. The bark on most birch trees has horizontal dark streaks that look like scoring (called lenticels). Birch tree bark is also well-known for its paper-like texture and peeling nature. The peeling bark on birch trees gives them ornamental value in wintertime.

Most birches are characterized by varicolored or white bark with papery plates, distinctive horizontal markings, and peeling layers; the appearance of the bark often is the feature that gives the species its common name, paper birch.

Birch bark or birchbark is the bark of several Eurasian and North American birch trees of the genus Betula. The strong and water-resistant cardboard-like bark can be easily cut, bent, and sewn, which has made it a valuable building, crafting, and writing material, since pre-historic times.