Thomas Krumenacker/ BIA / Common Crane (Grus grus) flock at sunrise, Brandenburg, Germany

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

Sandra Bartocha / Scots pine (Pinus sylvestris) trees in snowy woodland in evening sunlight, Potsdam, Germany, January.

Sandra Bartocha / Silver birch (Betula pendula) with Heather (Calluna vulgaris) in full bloom, Reicherskreuzer Heide, Nature Reserve Schlaubetal, Germany, August.

Jan Wegener / Eurasian Penduline-Tit (Remiz pendulinus), Brandenburg, Germany

Jan Wegener / Brambling (Fringilla montifringilla), Brandenburg, Germany

Jan Wegener / Common Starling (Sturnus vulgaris) feeding its offspring, Brandenburg, Germany

Sandra Bartocha / Wood Anemone (Anemone nemorosa) flower abstract, Hoher Fläming nature reserve, Brandenburg, Germany