Moor Frog

Rana arvalis

Moor Frog (Rana arvalis)
Image: Wikipedia / Wikimedia Commons, CC BY-SA, wikipedia

The moor frog is a slim, reddish-brown, semiaquatic amphibian native to Europe and Asia. Moor frogs are known for their ability to freeze solid and survive thawing. The frog makes use of various cryoprotectants i.e. antifreeze that decrease its internal freezing temperature. The species is distributed over a large range, covering a significant portion of Eurasia. Male moor frogs are known to turn blue temporarily during the height of mating season. This coloration is assumed to signal a mate's fitness. Moor frogs typically mate through multimale amplexus, a form of polyandry. Source

Where is the Moor Frog now?

In the last 8 weeks this frog or toad was recorded 12 times across 3 areas (each area is a 5 degree square).

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.