Unusual observation of a Frog under a stone in the middle of a fast flowing brook (10-15cm depth).
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Common frogs will sometimes hibernate in flowing water, especially in very cold areas such as Scandinavia. I think it is because flowing water remains oxygenated and doesn't freeze, unlike ponds. I have seen this in Yorkshire.
Interesting as it has been very cold (it snowed while we were surveying!).
On the 1st December 2012 Nightfly and I were on the Garron Plateau walking and observing.During the course of the day we encountered two Frogs in hibernation.One had chosen to dig in under a sheet of tin with very little protection from sub zero temperatures.The other was under a large stone in a small stream.Different strategies ensure somebody gets it right rather than all getting it wrong I suppose.
Great to see gravid females on the move, this one is probably using the brook as a temporary refuge/hibernation spot on its way to its spawning pond. It takes a great deal of energy sometimes to get from where you are to where you want to be and periods of warmth are few and short lasting at the time of year that frogs need to assemble to spawn. Short hops from a more 'permanent' hibernation spot allow frogs to make a more sustainable journey and a great pit stop for a frog is a well oxygenated stream with suitable temperatures.
Lat/Lng: 53.676, -2.3947
OS grid ref: SD740200