Michael Quinton / Clark's Nutcracker (Nucifraga columbiana) feeding on Whitebark Pine (Pinus albicaulis) nuts during snowfall in winter, Idaho

Jeff Foott / Dead White bark pine trees (Pinus albicaulis) killed by Mountain pine beetle (Dendroctonus ponderosae) Grand Teton National Forest, Wyoming, USA. December. The current outbreak of mountain pine beetl...

Jeff Foott / Dead White bark pine trees (Pinus albicaulis) killed by Mountain pine beetle (Dendroctonus ponderosa,) Grand Teton National Forest, Wyoming, USA. The current outbreak of mountain pine beetles has bee...

Jeff Foott / Mountain Pine Beetle (Dendroctonus ponderosae) killed Whitebark Pine (Pinus albicaulis) trees, Bridger-Teton National Forest, Wyoming

Jeff Foott / Mountain Pine Beetle (Dendroctonus ponderosae) killed Whitebark Pine (Pinus albicaulis) trees, Bridger-Teton National Forest, Wyoming

Jeff Foott / Mountain Pine Beetle (Dendroctonus ponderosae) killed Whitebark Pine (Pinus albicaulis) trees, Bridger-Teton National Forest, Wyoming

Jeff Foott / Mountain Pine Beetle (Dendroctonus ponderosae) killed Whitebark Pine (Pinus albicaulis) trees, Bridger-Bridger-Teton National Forest, Wyoming

Mark Taylor / Clark's Nutcracker (Nucifraga columbiana) eating seeds from its favourite food plant, the Whitebark Pine (Pinus albicaulis), Western USA

Mark Taylor / Whitebark Pine (Pinus albicaulis) and granite boulders, Yosemite National Park, California, USA

Mark Taylor / Whitebark Pine (Pinus albicaulis) and granite boulders in Yosemite National Park, California, USA.