Scott Leslie / Trail through forest, Kissimmee Prairie Preserve State Park, Florida

Jack Jeffrey / Common Amakihi (Viridonia virens) juvenile, Hawaii

Donald M. Jones / White-tailed Deer (Odocoileus virginianus) doe portrait, Montana

Piotr Naskrecki / Mantid (Taumantis sp) instar, Woburn, Massachusetts

Jim Brandenburg / Thickspike Gayfeather (Liatris pycnostachya) flowering on tallgrass prairie, Crow-Hassan Park Reserve, Minnesota

Tim Fitzharris / Grassland and cumulus clouds, Wind Cave National Park, South Dakota

Pete Oxford / Dead trees in Mammoth Hot Springs travertine terraces, Yellowstone National Park, Wyoming

Suzi Eszterhas / Harbor Seal (Phoca vitulina) pup in shallows, Elkhorn Slough, California

Michael Durham / Silver-haired Bat (Lasionycteris noctivagans) illustrating wing movement during flight, Rogue River National Forest, Oregon, digital composite

Tim Fitzharris / Sunset at Shark's Cove, Oahu, Hawaii

Tim Fitzharris / Grand Teton Range and cloudy sky at Schwabacher Landing, Grand Teton National Park, Wyoming

Tim Fitzharris / Full moon over Mono Lake with wind and rain eroded tufa towers and the eastern Sierra Nevada Mountains in the background, California