Jim Brandenburg / Paper Birch (Betula papyrifera) bark peeling, Minnesota

Yva Momatiuk & John Eastcott / Paper Birch (Betula papyrifera) trees reflected in water, Hooker Lake, North Dakota

Jeff Foott / Paper Birch (Betula papyrifera) log and leaves in autumn, Acadia National Park, Maine

Jeff Foott / Paper Birch (Betula papyrifera) trees in autumn, Acadia National Park, Maine

Jeff Foott / Paper Birch (Betula papyrifera) trees in autumn, Acadia National Park, Maine

Lynn M. Stone / Paper birch tree (Betula papyrifera) trunk covered in Birch polypore bracket fungi (Piptoporus betulinus) October. Green Mountain National Forest, Vermont, USA

George Sanker / North American beaver (Castor canadensis) eating a fallen Paper Birch tree (Betula papyrifera). Acadia National Park, Maine, USA.

George Sanker / North American beaver (Castor canadensis) eating a fallen Paper Birch tree (Betula papyrifera). Acadia National Park, Maine, USA.

George Sanker / Wood duck (Aix sponsa) drake in breeding plumage against Paper birch (Betula papyrifera) Acadia National Park, Maine, USA June

Scott Leslie / Paper Birch (Betula papyrifera) and river, Cape Breton Highland National Park, Nova Scotia, Canada

Jim Brandenburg / Paper Birch (Betula papyrifera) bark peeling, Listening Point, Ely, Minnesota

Ernie Janes / Paper / Canoe Birch (Betula papyifera) shedding bark, USA