Written by Madeleine Barnes, Transforming Lives Trainee.
Drowsy December
As we bundle up at home to survive the chilly weather, so do reptiles and amphibians. As they are ectotherms (cold-blooded), heat is very important to their regular functions and so they ‘hibernate’ through the cold in cozy places such as hibernacula, log piles, hedgerows, the deepest areas of ponds, or under rocks and leaves. We won’t be seeing much of our species until next year.
Hibernation is a blanket term to describe the lowered activity of many species in the winter, but in the UK only 3 animals undergo true hibernation: bats, hedgehogs and dormice.
The species Froglife conserve overwinter or brumate, meaning they may become active for brief periods if the weather warms up. To help them out, avoid disturbing piles of natural matter (e.g. log, rocks, leaves) and if you are able to do so safely, clear the surface of frozen ponds from fallen leaves or snow to allow sunlight to reach the depths – this will allow submerged plants to photosynthesise and produce oxygen for any amphibians waiting out the winter down there!
You can find further tips on how to look after amphibians and reptiles during winter here.
If you spot any of our species out and about during winter, please remember to record them on our free Dragon Finder App. Data from the Dragon Finder App is crucial going forward to monitor the relationship between temperature changes and the behaviours of reptiles and amphibians in the UK.


You start by digging a hole, it doesn’t have to be too wide or deep, just enough to retain heat to keep reptiles and amphibians warm. Once you have done this, you can start filling the hole with logs, rocks and bricks. Once you have filled some of the hole, you can start piling the larger logs and sticks a little higher than ground level to then cover with softer things such as leaf litter and bramble (these help to trap the warmth). Finally, you can use the mud you dug up to then cover up the hibernaculum, remembering to leave some gaps so that the animals can get in and out.
As November comes along, we start to settle down on the couch with a warm mug of hot chocolate in hand. Our animal friends are also beginning to settle down as they begin their long slumber of hibernation.
