Resource Partitioning among Three Buteo Species in the Centennial Valley, Montana

Restani, Marco

doi:10.2307/3247736

Cited by 28 publications

(35 citation statements)

References 7 publications

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“…In Montana, Restani (1991) reported no decline in productivity for nests in close proximity but did document nest substrate partitioning between red-tailed and ferruginous hawks, and dietary partitioning between Swainson's hawks and ferruginous hawks. In contrast, Thurow and White (1983) suggested a mutualistic relationship between ferruginous and Swainson's hawks in Idaho.…”

Section: Nesting Associatesmentioning

confidence: 99%

“…Diet overlap among these three species is high (Olendorff 1993), ranging from 65 to 98 percent (Schmutz et al 1980, Cottrell 1981, Thurow and White 1983, Steenhof and Kochert 1985, MacLaren 1986, Restani 1991, indicating potential competition for food. Furthermore, Thurow et al (1980) observed that although ferruginous, Swainson's, and red-tailed hawks are broadly sympatric during the breeding season, one species is usually uncommon (but see Restani 1991).…”

Section: Competitionmentioning

confidence: 99%

“…When nests are not placed on the ground, they are usually constructed 2 to 8 m (6 to 24 ft.) above ground (Weston 1969, Bechard et al 1990, Restani 1991, but they may be as high as 20 m (60 ft.), especially on electrical transmission towers (Bechard and Schmutz 1995). Historically, ground nesting may have been more common, especially on the Great Plains, which exhibit a paucity of trees.…”

Section: Breeding Habitatmentioning

confidence: 99%

“…Within each broad category of ferruginous hawk habitat, smaller scale features are important for successful reproduction. Sparse riparian forests, the periphery of forests, terrain features such as cliffs, rolling hills and rock outcrops, isolated trees and small groves provide habitat diversity and increased suitability for nesting ferruginous hawks (Smith and Murphy 1973, Woffinden 1975, Lokemoen and Duebbert 1976, Cottrell 1981, Roth and Marzluff 1989, Restani 1991, Olendorff 1993.…”

Section: Breeding Habitatmentioning

confidence: 99%

“…Ferruginous hawks, Swainson's hawks, and redtailed hawks often occur sympatrically (Restani 1991, Olendorff 1993. Diet overlap among these three species is high (Olendorff 1993), ranging from 65 to 98 percent (Schmutz et al 1980, Cottrell 1981, Thurow and White 1983, Steenhof and Kochert 1985, MacLaren 1986, Restani 1991, indicating potential competition for food.…”

Section: Competitionmentioning

confidence: 99%

See 4 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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Section: Nesting Associatesmentioning

confidence: 99%

Section: Competitionmentioning

confidence: 99%

Section: Breeding Habitatmentioning

confidence: 99%

Section: Breeding Habitatmentioning

confidence: 99%

Section: Competitionmentioning

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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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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Avian Predators in Rangelands

Bedrosian

2023

Rangeland Wildlife Ecology and Conservation

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Management of avian predators in western rangelands is uniquely challenging due to differences in managing for/against particular species, management of sensitive prey species, long-standing human/wildlife conflicts, and the unique legal protections within this ecological group. In general, many avian predator species considered rangeland specialists have been declining due to habitat loss, fragmentation, human sensitivity, and direct persecution. Conversely, avian predators that are more human-tolerant and/or are subsidized by human activities are significantly increasing across rangelands. The complicated nature of inter- and intra-species guilds, coupled with human dynamics has created a challenging scenario for both management for avian predators, as well as their prey. Human-mediated population control, both legal and illegal, continues for avian predators to reduce livestock conflict, aid sensitive prey populations, and/or because of general predator persecution. Conversion of rangeland to development for energy, cultivation, and urbanization remains the largest impediment to maintaining viable, historical assemblages of avian predators. Large-scale habitat protections, reduction of invasive plants, and reducing wildfire will continue to enhance at-risk populations of predators and their prey. Further, mediating human-induced mortality risks will also aid at-risk predator populations, such as reducing direct killing (poisoning and shooting), secondary poisoning from varmint control and lead ammunition use, electrocutions, and vehicle strikes, while reducing anthropogenic subsidies can help curtail population expansion of corvids. Additional understanding of long-term, successful predator control efforts for corvids and mitigation options for declining raptors is needed to help balance the avian predator–prey dynamic in western rangelands.

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Resource Partitioning among Three Buteo Species in the Centennial Valley, Montana

Cited by 28 publications

References 7 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

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

Avian Predators in Rangelands

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