Avian Electrocutions on Incorrectly Retrofitted Power Poles
Note: What a wealth of information! All 3 authors are from EDM in Ft. Collins, CO, and 1 of them spoke to us via live-streaming arranged by RRP! Please, check out the numerous figures and tables and all of the other papers available on the subject in the "Literature Cited" section.
Quote: Retrofitting poles through increasing clearances (separation) between components, adding insulation to components, or adding redirection materials like perch discouragers reduces risk, but electrocutions may occur even on retrofitted poles. This study provides insight to electric utility personnel and wildlife managers interested in proactively evaluating the thoroughness of retrofitting, facilitating immediate identification and correction of retrofitting errors, increasing cost effectiveness, and reducing avian electrocution mortality.
http://www.bioone.org/doi/10.3356/JRR-16-93.1Figure 1. Avian electrocution risk is highest on poles with no mitigation, and lowest on poles with avian-friendly retrofitting achieved through insulation or separation.