Common Vole, (Microtus arvalis), Bielefeld, Nordrhein Westfalen, Germany

Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan, Asia

Moor Frog (Rana arvalis) in spawning grounds at sunset, Middle Elbe Biosphere Reserve near Dessau, Saxony-Anhalt, Germany, Europe

Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan

Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan, Asia

Moor Frogs (Rana arvalis) during mating, the Middle Elbe Biosphere Reserve, Dessau, Germany, Europe

Moor Frogs (Rana arvalis) during mating, Middle Elbe Biosphere Reserve near Dessau, Saxony-Anhalt, Germany, Europe

Tree frog (Rhacophorus arvalis), inflated vocal sac, courtship, endangered species, Taiwan, Asia

Moor Frogs (Rana arvalis) mating

Frog, Rana arvalis

Moor frog

Moor frog (Rana arvalis) male, blue coloured during mating season, with spawn in spawning waters, Thuringia, Germany, Europe

Moor Frogs (Rana arvalis) during mating, Middle Elbe Biosphere Reserve near Dessau, Saxony-Anhalt, Germany, Europe

Moor frog (Rana arvalis), spawn, Kalkalpen National Park, Limestone Alps, Upper Austria, Europe

Moor frog (Rana arvalis), male in the spawning grounds, Mittlere Elbe biosphere reserve on the Elbe river near Dessau, Saxony-Anhalt, Germany, Europe

Stoat (Mustela erminea), in winter fur on a snow-covered meadow with field mouse (Microtus arvalis) in the catch, Swabian Alb biosphere reserve, Baden-Wuerttemberg, Germany, Europe

Moor frog (Rana arvalis)

Moor frog (Rana arvalis)

Moor frogs (Rana arvalis), two males, blue coloured during mating season, with spawn in spawning waters, Thuringia, Germany, Europe

Moor frog (Rana arvalis)

Rana arvalis

Frog, Rana arvalis