Solvin Zankl / Moor frog (Rana arvalis) mating pair in pond, Germany

Solvin Zankl / Moor frog (Rana arvalis) group of males in water, Germany

Dietmar Nill / Moor frogs (Rana arvalis) mating in a pond, Germany (the male is blue)

Artur Tabor / Moor frogs and frogspawn (Rana arvalis) Poland

David Kjaer / Common toad (Bufo bufo) pair in amplexus, Deeside, Scotland April

Silvia Reiche / Moor Frog (Rana arvalis) male, Netherlands

Konrad Wothe / Moor Frog (Rana arvalis) pair in amplexus, Bavaria, Germany

Konrad Wothe / Moor Frog (Rana arvalis), Bavaria, Germany

Jussi Murtosaari / Moor frog (Rana arvalis) adult on grass, Joutsa (formerly Leivonmaki), Finland, February, May.

Sandra Bartocha / Moor Frog (Rana arvalis) Mecklenburg-Vorpommern, Germany, April

Sandra Bartocha / Moor Frogs (Rana arvalis) gathered in pond to breed, with males in blue breeding colours. Crack Willow (Salix fragilis) trees grwoing along the waters edge, Germany, April

Sandra Bartocha / Moor Frog (Rana arvalis) group with males in breeding colouration with Crack Willow (Salix fragilis) trees at the waters edge, Germany, April