Retrofitting of power lines effectively reduces mortality by electrocution in large birds: an example with the endangered Bonelli's eagle

摘要: Summary 1. Mortality caused by power lines is a conservation problem for many vulnerable bird species. Many large species are especially threatened electrocution as they frequently perch on pylons leading to that typically causes death. Electrocution mitigation measures have been implemented protect several species; however, resulting decrease in mortality due these has not previously demonstrated at the population scale. 2. In this study, we used data from long-term capture–recapture programme (combining resightings of live birds and recovery dead birds) carried out French Bonelli’s eagle Aquila fasciata 1990 2009 estimate impact insulation key demographic rates. 3. We found survival probability all age classes increased after dangerous lines, electrocution. This was partially compensated an increase other 4. Our findings show strong positive juveniles immature lesser adults. The overall line led sharp predicted growth rates (from 082 098), although our still suggest self-sustaining. Elasticity values indicate adult parameter dynamics species, since seemed close zero, ability act limited. 5. study demonstrates relevant scale it allows rate thus turn 6. Synthesis applications. induced considerable major consequences viability birds. also can lead through reducing improved viability. light results, there urgent need conservationists contact stakeholders only urge them generalize retrofitting actions but also, planning new infrastructure development, plan less harmful will be far costly than developing posteriori actions.