September 2025

Aspect Ecology deploys new survey technique to reduce time required for Dormouse surveys

Surveys for the protected species Dormouse can take a considerable time to complete across the active season (April-November). As an alternative to standard nest tube sampling, Aspect Ecology has been trialing a new survey technique for Dormice for some time, using ‘footprint tunnels’. Research has shown that the use of this technique in certain habitats can be more effective and hence can reduce the survey duration required on site to demonstrate the presence/likely absence of the species.

Footprint tunnels are tube-like structures attached to branches, through which Dormice may pass if they are present. The tunnels contain a charcoal-based ‘ink pad’ and paper, onto which the footprints of passing animals are transferred. Any footprints can then be identified to determine if Dormice have passed through (and hence if they are present on site), distinguished by the characteristic triangular section of their footpad.

We are pleased to report that industry standard guidance has now been updated to include footprint tunnels as an endorsed technique. As such, this method can now be deployed for formal Dormouse surveys to inform planning and licence applications. Importantly, due to its more effective nature, the use of this technique brings the opportunity to significantly shorten the survey duration in certain habitats. We look forward to rolling this technique out across more sites.

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