Detecting Hazel Dormice in the UK: what are we missing?

Multiple techniques can be used to detect the presence of Hazel Dormice and as a result, there is reasonable confidence that lack detection means dormice are probably absent. In UK, ancient woodlands frequently considered reservoir Dormouse populations usual starting point for surveys. However, we present evidence this may one most difficult habitats in which species. This largely due many these being unmanaged, with poorly developed shrub layer heavy shading. reduces probability finding natural field signs such nests chewed hazel nuts. Similarly, because devices (nest boxes, nest tubes footprint tunnels) typically positioned no more than two metres from ground ease study, an assumption will leave dense canopy use them. We predict higher risk false negatives habitat type research needed provide better certainty when surveying high woodland.