Preventing Raptor Electrocutions in an Urban Environment

Dwyer, James F.; Mannan, R. William

doi:10.3356/0892-1016(2007)41[259:preiau]2.0.co;2

Cited by 52 publications

(71 citation statements)

References 15 publications

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“…Many studies also indicate higher risk of electrocution for young birds, probably due to their poorly developed motor skills (APLIC 2006, Lehman et al 2007. Although this pattern was not evident in this study, we previously reported such for this population (Dwyer and Mannan 2007).…”

Section: Discussioncontrasting

confidence: 49%

“…Harris's Hawks have a wrist-to-wrist span of ca. 60 cm (APLIC 2006) and we identified poles with ,60 cm of separation between conductors as particularly dangerous (Dwyer and Mannan 2007).…”

mentioning

confidence: 99%

“…Raptors often perch on overhead electric structures where they risk electrocution (APLIC 2006, Lehman et al 2007, Dwyer and Mannan 2007 or injury from electric shock (Morrow andMorrow 2003, Dwyer 2006). These events occur when a raptor simultaneously contacts two or more differentially energized conductors, and the probability of simultaneous contact increases with increasing body size (APLIC 2006).…”

mentioning

confidence: 99%

“…From the time each nest was discovered until 8 wk after young had fledged, we searched for electrocuted hawks within a 7.6-m radius (Harness 2000, Dwyer andMannan 2007) around the bases of particularly dangerous poles within 300 m of Harris's Hawk nests. Electrocution is more likely for a given species when individuals perch on poles where differentially energized, exposed conductors occur closer together than the wrist-to-wrist span of that species (APLIC 2006).…”

mentioning

confidence: 99%

“…We searched for Harris's Hawk nests as part of a larger study investigating the relationship between electrocution risk and proximity of power poles to nests (Dwyer and Mannan 2007), and used a bal-chatri trap (Bub 1978) to capture Harris's Hawks within nesting territories.…”

mentioning

confidence: 99%

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Return Rates of Aluminum Versus Plastic Leg Bands from Electrocuted Harris's Hawks (Parabuteo unicinctus)

Dwyer

Mannan

2009

Journal of Raptor Research

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Section: Discussioncontrasting

confidence: 49%

“…Harris's Hawks have a wrist-to-wrist span of ca. 60 cm (APLIC 2006) and we identified poles with ,60 cm of separation between conductors as particularly dangerous (Dwyer and Mannan 2007).…”

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Return Rates of Aluminum Versus Plastic Leg Bands from Electrocuted Harris's Hawks (Parabuteo unicinctus)

Dwyer

Mannan

2009

Journal of Raptor Research

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Laboratory corrosion tests on overhead line conductors with bird protection systems

Refsnæs

Magnusson

Ulleberg

2013

Int. Trans. Electr. Energ. Syst.

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SUMMARY Overhead lines in areas with sensitive populations of large birds raise demands for protection against bird electrocution (mortal current transfer through the bird bodies), particularly for threatened species like the eagle owl. For the decision making of what protection measures to apply, it is important to assess both their environmental benefits and the measures of technical consequences. One of the popular retrofit protection methods is insulation of the aluminium conductors at pin insulated medium voltage overhead line poles. In the present work, we have performed accelerated corrosion tests on aluminium conductors using four different bird protection systems available on the market. The tests were performed in laboratory environment for marine corrosivity indices 4 and 8, and simulated time periods up to 24 years. The results show that the systems influence the degradation of the aluminium conductors, leading to life‐time expectancy reductions between 12 and 22% for the investigated corrosivity indices. Copyright © 2013 John Wiley & Sons, Ltd.

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Power pole density informs spatial prioritization for mitigating avian electrocution

et al. 2016

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Raptor and corvid electrocutions cause continental conservation concerns for breeding, migrating, and wintering birds. Although concerns are widespread, mitigation is implemented primarily at local scales of individual electric utilities. By not considering landscape-scale patterns, conservation strategies may fail to focus mitigation where efforts are needed most. To enable resource managers to consider electrocution risk at larger scales, we developed a regional model of distribution power pole (pole) density in a grid of 1-km 2 cells throughout Colorado and Wyoming. To do so, we obtained data on pole locations from a sample of electric utilities covering 31% of Colorado and Wyoming, and developed a predictive model of poles throughout the remainder of the 2 states. Pole density was influenced by road lengths, number of oil and gas wells, slope, development, and land cover. Poles were densest in areas with high road lengths, high numbers of wells, and relatively flat terrain, and in areas developed for agriculture or human residences. When model predictions are viewed together with species-specific habitat maps, locations where high pole densities overlap habitat suggest areas where mitigating electrocution risk could be prioritized. Communication between resource managers and local utilities could then clarify the poles that caused the highest risk to raptors from electrocution. Thus, the model provides a framework for systematic spatial prioritization in support of regional conservation planning to minimize electrocution of raptors and corvids. Ó 2016 The Wildlife Society.

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Preventing Raptor Electrocutions in an Urban Environment

Cited by 52 publications

References 15 publications

Return Rates of Aluminum Versus Plastic Leg Bands from Electrocuted Harris's Hawks (Parabuteo unicinctus)

Return Rates of Aluminum Versus Plastic Leg Bands from Electrocuted Harris's Hawks (Parabuteo unicinctus)

Laboratory corrosion tests on overhead line conductors with bird protection systems

Power pole density informs spatial prioritization for mitigating avian electrocution

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