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Otter surveys


  • Presence/likely absence surveys involving searches for signs of otter activity including dens and footprints, and territorial markers such as anal jelly and spraint.
  • Activity surveys using automated motion sensitive cameras .
  • Monitoring surveys during works and after mitigation works are complete


Impact assessment


  • Strategic advice on project feasibility
  • Identification of potential direct and indirect impacts, both at the site level and in a wider perspective: risks of disturbing, injuring or killing Otters, habitat modification, loss, fragmentation or isolation, post development interference impacts and poor data situations or ‘last minute discoveries’
  • Quantification of potential impacts in terms of extent, magnitude, duration, timing, frequency, reversibility and cumulative effects.




Preparation of license applications to permit otherwise unlawful acts in relation to otters.


Otters: mitigation licence application form (A45)


Otter method statements




  • Artificial otter holt specifications and landscape designs
  • Receptor site selection
  • Licensed dismantling of otter holts
  • Channel damming and draining
  • Precautionary working method statements
  • Tool box talks
  • Ecological clerk of works role
  • Habitat management plans including otter holts, underpasses, culverts, aquatic features (ditches, rhines, ponds, lakes, reedbeds and wetlands) and planting and landscaping schemes.