Effectiveness of Artificial Nesting Structures for Ferruginous Hawks in Wyoming

Tigner, James R.; Call, Mayo W.; Kochert, Michael N.

doi:10.1016/b978-012100130-8/50017-1

Cited by 8 publications

(19 citation statements)

References 6 publications

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“…Where elevated nest structures (particularly trees) have been lost or are naturally lacking, artificial nest platforms can eliminate or significantly reduce the impact of this limiting factor. Artificial nest platforms have been installed in many areas with a paucity of suitable nest sites (Olendorff and Stoddart 1974, Howard and Hilliard 1980, Houston 1985, Stalmaster 1988, Call and Tigner 1991, Tigner et al 1996. In Wyoming, up to 63 percent of available artificial nest structures were occupied in any given year (Tigner et al 1996), and productivity of artificial nest sites may be higher than natural substrates , Tigner et al 1996.…”

Section: Availability and Security Of Nest Substratementioning

confidence: 99%

“…Another valuable use of artificial nesting substrates is in mitigating losses of natural nest sites due to resource development (Tigner et al 1996). Artificial nest structures may offset the loss of natural nest sites to development through more productive and secure nesting sites.…”

Section: Availability and Security Of Nest Substratementioning

confidence: 99%

“…Nests are often greater than 1 m in outside diameter and overall height (Bechard and Schmutz 1995); therefore, sturdy supporting branches are required to support the weight of the nest if it is constructed in a tree. Artificial nesting platforms have been successfully used by ferruginous hawks in many areas, including Wyoming (Tigner et al 1996) and Colorado (Stalmaster 1988, Olendorff 1993 within Region 2. These structures may provide more secure and stable nesting substrates, especially in areas where there is a paucity of natural nest sites.…”

Section: Nest Site Selection and Constructionmentioning

confidence: 99%

“…Many specific management tools or strategies have been published whose aim is to conserve or increase ferruginous hawk populations (Howard and Wolfe 1976, Howard and Hilliard 1980, Jasikoff 1982, Olendorff 1993, Tigner et al 1996, Gillihan et al 2004a, 2004b. These range in scale from tools that target individual hawks to ecosystem-based management strategies.…”

Section: Tools and Practicesmentioning

confidence: 99%

“…Artificial nest platforms have been installed in many areas with a paucity of suitable nest sites (Olendorff and Stoddart 1974, Howard and Hilliard 1980, Houston 1985, Stalmaster 1988, Call and Tigner 1991, Tigner et al 1996. In Wyoming, up to 63 percent of available artificial nest structures were occupied in any given year (Tigner et al 1996), and productivity of artificial nest sites may be higher than natural substrates , Tigner et al 1996. Artificial nest sites provide more secure (both in stability of the actual nest and inaccessibility to mammalian predators), abundant, and potentially more productive nest substrates, making them an extremely valuable tool for managing local populations of ferruginous hawks.…”

Section: Availability and Security Of Nest Substratementioning

confidence: 99%

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Nesting Behavior, Provisioning Rates, and Parental Roles of Ferruginous Hawks in New Mexico

Keeley

Bechard²

2017

Journal of Raptor Research

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Section: Availability and Security Of Nest Substratementioning

confidence: 99%

Section: Availability and Security Of Nest Substratementioning

confidence: 99%

Section: Nest Site Selection and Constructionmentioning

confidence: 99%

Section: Tools and Practicesmentioning

confidence: 99%

Section: Availability and Security Of Nest Substratementioning

confidence: 99%

See 3 more Smart Citations

Nesting Behavior, Provisioning Rates, and Parental Roles of Ferruginous Hawks in New Mexico

Keeley

Bechard²

2017

Journal of Raptor Research

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Resource selection of apex raptors: implications for siting energy development in sagebrush and prairie ecosystems

et al. 2020

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There is an urgent need to understand ecological responses of avian species to the rapidly expanding human footprint of conventional and renewable energy development in sagebrush and prairie ecosystems. The ferruginous hawk (Buteo regalis) and golden eagle (Aquila chrysaetos) are two sympatric raptors of conservation concern that occupy and flourish in the most intact sagebrush steppe region remaining in North America. To understand these species’ use of habitat relative to energy development, we built resource selection functions using a spatially representative sample of occupied nesting territories collected in 2010–2011 and remotely sensed environmental variables across an extensive study area (186,693 km2). We used the resulting predicted resource selection maps to evaluate spatial overlap between the nesting habitats of these sympatric raptor species, as well as overlap of predicted habitat with potential development of oil/gas and wind energy resources. Remotely sensed variables were very effective in modeling patterns of nest‐site selection based on fivefold cross‐validation (>0.93 Spearman‐rank correlation) and validation with an independent dataset of historical nests collected from 2000 to 2009. Topographic roughness and intermediate levels of spring precipitation were the strongest drivers of differences in habitat use between ferruginous hawks and golden eagles. We did not detect a strong signal of avoidance of energy infrastructure by either species at current levels of development and both nested closer than expected to gravel/dirt roads associated with oil and gas infrastructure. However, extensive overlap of nesting habitat more selected by ferruginous hawks and golden eagles with areas of actual and potential energy development suggests both species are at risk from future habitat fragmentation. Given that 80% of nests are> 1 km from oil/gas wells, we believe the density of energy‐related disturbance present during our study was insufficient to drive patterns of resource selection for ferruginous hawks when considered at broad spatial scales. However, it was beyond the scope of our study to predict long‐term, population‐level responses. We suggest rigorous monitoring of long‐term trends in occupancy, productivity, and distribution is warranted for populations of ferruginous hawk and golden eagle in sagebrush and prairie ecosystems exposed to increased energy development.

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Human‐made structures, vegetation, and weather influence ferruginous hawk breeding performance

et al. 2015

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Studies of anthropogenic impacts on wildlife may produce inconclusive or biased results if they fail to account for natural sources of variation in breeding performance and do not use probabilistic sampling at a scale functional for management. We used stratified random sampling and generalized linear mixed models to test hypotheses on relationships of daily nest survival rate (DSR) and fledgling production with anthropogenic and environmental factors that influence reproduction in the ferruginous hawk (Buteo regalis). We conducted the study across ferruginous hawk range in Wyoming, USA, 2010-2012. We performed extensive field surveys of prey, vegetation, and nest substrates, and used spatially explicit data to quantify weather, and the most widespread forms of anthropogenic infrastructure (i.e., roads, oil and gas well pads) in ferruginous hawk territories. We found strong evidence that DSR and productivity were greater for nests on anthropogenic structures (i.e., artificial nest platforms, gas condensation tanks, abandoned windmill platforms, power poles) compared to natural substrates (i.e., trees, cliffs, rock outcrops). Additionally, ferruginous hawks produced more fledglings at territories with greater shrub cover and fewer severe storms during the June brood-rearing period. Amount of oil and gas development and prey was not associated with either measure of breeding performance. Our results suggest that artificial nest platforms are an effective tool to improve breeding success of ferruginous hawks and nesting on anthropogenic structures does not constitute an ecological trap for this species. Although ferruginous hawks nested in some areas with very little vegetative cover, territories with greater amounts of shrub cover produced more fledglings. The negative impact of severe spring storms on fledgling production illustrates the importance of including future weather scenarios in management planning for this species because storms are predicted to increase in frequency and intensity as a result of climate change. Published 2015. This article is a U.S. Government work and is in the public domain in the USA.

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Effectiveness of Artificial Nesting Structures for Ferruginous Hawks in Wyoming

Cited by 8 publications

References 6 publications

Nesting Behavior, Provisioning Rates, and Parental Roles of Ferruginous Hawks in New Mexico

Nesting Behavior, Provisioning Rates, and Parental Roles of Ferruginous Hawks in New Mexico

Resource selection of apex raptors: implications for siting energy development in sagebrush and prairie ecosystems

Human‐made structures, vegetation, and weather influence ferruginous hawk breeding performance

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