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Dormouse nest tube/box surveys

dormouse tube


Nest tube surveys


A nest tube survey involves deploying nest tubes in hedgerows or trees within the site and checking the tubes in the period from April to November.


Each month has a score relating to the probability of finding dormice present in any of the nest tubes. Surveys need to achieve a minimum search effort score of 20 which is accepted sufficient to provide confidence in a result of absence.


Tubes should not be checked more than once per month but the number of tubes may be increased to attain the index of probability score.


Month                                               Index of probability based on 50 tubes
April 1
May 4
June 2
July 2
August 5
September 7
October 2
November 2