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Resource Documents: Raptors (7 items)
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Estimated golden eagle mortality from wind turbines in the western United States
Author: Gedir, Jay; et al.
Abstract: Wind power is increasingly meeting global renewable energy demands; however, more turbines leads to increased bird-turbine collisions, particularly raptors, which can negatively impact populations. We estimated annual turbine mortalities of the federally-protected golden eagle (Aquila chrysaetos) in the western United States (2013–2024) with a Bayesian collision risk model (CRM). We used eBird relative abundance data to predict areas where golden eagles are at lower or higher risk of turbine collisions and turbine data from the U.S. Geological Survey U.S. . . .
More »Responses of dispersing GPS-tagged Golden Eagles (Aquila chrysaetos) to multiple wind farms across Scotland
Author: Fielding, Alan; et al.
Abstract: Wind farms may have two broad potential adverse effects on birds via antagonistic processes: displacement from the vicinity of turbines (avoidance), or death through collision with rotating turbine blades. Large raptors are often shown or presumed to be vulnerable to collision and are demographically sensitive to additional mortality, as exemplified by several studies of the Golden Eagle Aquila chrysaetos. Previous findings from Scottish Eagles, however, have suggested avoidance as the primary response. Our study used data from 59 GPS-tagged . . .
More »Evaluating anthropogenic landscape alterations as wildlife hazards, with wind farms as an example
Author: Law, Peter; and Fuller, Mark
[ABSTRACT] Anthropogenic alterations to landscape are indicators of potential compromise of that landscape’s ecology. We describe how alterations can be assessed as ‘hazards’ to wildlife through a sequence of three steps: diagnosing the means by which the hazard acts on individual organisms at risk; estimating the fitness cost of the hazard to those individuals and the rate at which that cost occurs; and translating that cost rate into a demographic cost by identifying the relevant demographically-closed population. We exploit the . . .
More »Quantifying the demographic cost of human-related mortality to a raptor population
Author: Hunt, W. Grainger; et al.
[Abstract] Raptors are exposed to a wide variety of human-related mortality agents, and yet population-level effects are rarely quantified. Doing so requires modeling vital rates in the context of species life-history, behavior, and population dynamics theory. In this paper, we explore the details of such an analysis by focusing on the demography of a resident, tree-nesting population of golden eagles (Aquila chrysaetos) in the vicinity of an extensive (142 km²) windfarm in California. During 1994–2000, we tracked the fates of >250 . . .
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