Close-up of bark of a Bristlecone pine tree

Close-up of a Stellers Jay (Cyanocitta stelleri) perching on a tree trunk

Close-up of cones and leaves of a Lodgepole pine (Pinus contorta) tree

Dead pine tree viewed through tree trunks, Lakes Basin Recreation Area, Plumas National Forest, California, USA

Roots of a Bristlecone pine tree, Ancient Bristlecone Pine Forest, Ancient Bristlecone Scenic Byway, Inyo National Forest, California, USA

Roots of a Bristlecone pine tree, Ancient Bristlecone Pine Forest, Ancient Bristlecone Scenic Byway, Inyo National Forest, California, USA

Christmas ornaments hanging on a frost covered pine tree

Arizona woodpecker (Picoides arizonae) perching on a tree trunk

Acorn woodpecker (Melanerpes formicivorus) perching on a tree trunk

Close-up of a Chiweenie dog leaning against a tree trunk

Pine tree, black and white

Branch of pine tree, close up

Close up of a tree bonsai, front view, Japan

Sparrow perching on branch of pine tree

Two sparrows perching on branch of pine tree

Close-up of bark of a Bristlecone pine tree