The People's Trust for Endangered Species (PTES) and the British Hedgehog Preservation Society (BHPS) are running a public survey to help determine whether climate change is having an impact on when hedgehogs emerge from hibernation and how this might be affecting their survival. 

Analysis by PTES shows that hedgehog populations have plummeted by over a third in the last ten years. 

The decline of the species is attributed to a number of environmental factors, but with more extreme weather fluctuations recorded in recent seasons, researchers wonder whether climate change may be another contributing issue.

To take part in the survey and record your sightings of hedgehogs as they start to emerge in spring after hibernation, register online before 1 February 2014 at