Jim Brandenburg / American Bison (Bison bison) herd on prairie with quartz, Blue Mounds State Park, Minnesota

Jim Brandenburg / Fishing Spider (Pisauridae) pair on moss, Minnesota

Jim Brandenburg / Forest on lake shore, Judd Lake, Superior National Forest, Minnesota

Jim Brandenburg / Shoreline, Discovery Lake, Boundary Waters Canoe Area Wilderness, Minnesota

Jim Brandenburg / Fire in prairie, Minnesota

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

Jim Brandenburg / Blue Jay (Cyanocitta cristata) pair fighting while a third watches, Minnesota

Jim Brandenburg / Black-footed Ferret (Mustela nigripes) smelling ground, Wyoming

Jim Brandenburg / Sundogs, also known as mock sun, with snow field, Minnesota

Jim Brandenburg / Thickspike Gayfeather (Liatris pycnostachya) flowers with eagle-shaped cloud, Touch the Sky Northern Tallgrass Prairie National Wildlife Refuge, Minnesota

Jim Brandenburg / Arctic Ground Squirrel (Spermophilus parryii) standing guard, Alaska

Jim Brandenburg / Common Loon (Gavia immer) swimming, Minnesota