Effectiveness of raptor perch deterrents on an electrical transmission line in southwestern Wyoming

  • Published source details Slater S.J. & Smith J.P. (2010) Effectiveness of raptor perch deterrents on an electrical transmission line in southwestern Wyoming. Journal of Wildlife Management, 74, 1080-1088.


This study is summarised as evidence for the following.

Action Category

Use perch-deterrents to stop raptors perching on pylons

Action Link
Bird Conservation
  1. Use perch-deterrents to stop raptors perching on pylons

    A controlled study from September-August in 2006-2007 in shrubland in Wyoming, USA (Slater & Smith 2010), found that raptor activity and predation rates were significantly lower near a 24.9 km perch-deterrent line, compared to a 16.4 km section of control line (42 sightings vs. 551 and 69 prey items found vs. 277). Golden eagles Aquila chrysaetos and common ravens Corvus corax were the species most commonly observed successfully overcoming deterrent devices (76% of deterrent-line sightings). More raptors perched on wires (rather than pylons) on perch-deterrent lines (228 compared to 11 sightings on control lines; 68% of sightings were rough-legged hawks Buteo lagopus).



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