Moor Frog - Rana arvalis 

The Moor Frog, Rana arvalis (Ranidae) is one of the most abundant amphibians in the Central and Eastern Europe, as well as West Siberia. During their mating season males show a distinctive blue coloration and form breeding choruses. They gather in shallow ponds which quickly warm up in spring. 

References: [1] - [2]

Photo credit: ©Solvin Zankl | Locality: Europe (2007)

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