Marking of deer fences to reduce frequency of collisions by woodland grouse

  • Published source details Baines D. & Andrew M. (2003) Marking of deer fences to reduce frequency of collisions by woodland grouse. Biological Conservation, 110, 169-176.


This study is summarised as evidence for the following.

Action Category

Mark fences to reduce bird collision mortality

Action Link
Bird Conservation
  1. Mark fences to reduce bird collision mortality

    In a randomised, replicated and controlled study at thirteen sites in the Scottish Highlands from April 1995 to May 1997 (Baines & Andrew 2003), significantly fewer birds collided with sections of deer fence marked with orange netting (0.35 collisions/km/month) than with unmarked control sections (1.13 collisions/km/month). A total of 437 birds collided with the fences, 92% of which were gamebirds (red grouse Lagopus lagopus scoticus accounted for 42%, black grouse Tetrao tetrix 29% and western capercaillie  Tetrao urogallus 20%). Collision rates in marked sections were 91% lower for black grouse and 64% lower for capercallie than in control sections. A total of 20 km of ten different fences was tested, with two 1 km stretches of each fence being randomly assigned to treatments.


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