Ecology and Roosting Behavior of Rough-legged Hawks (Buteo Lagopus) Wintering in the Mission Valley of Northwestern Montana PDF Download
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Author: Chad V. Olson
Publisher:
ISBN:
Category : Hawks
Languages : en
Pages : 386
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Author: Chad V. Olson
Publisher:
ISBN:
Category : Hawks
Languages : en
Pages : 386
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Author: James Robert Byrne
Publisher:
ISBN:
Category : Hawks
Languages : en
Pages : 210
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Author: Edwin Roy Smith
Publisher:
ISBN:
Category : Hawks
Languages : en
Pages : 158
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Author: Gary D. Schnell
Publisher:
ISBN:
Category : Hawks
Languages : en
Pages : 112
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Author: Genevieve C. Rozhon
Publisher:
ISBN:
Category : Rough-legged hawk
Languages : en
Pages : 108
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Book Description
The rough-legged hawk (Buteo lagopus sanctijohannis) is one of the most under-studied raptor species in North America. As a species that exhibits reversed sexual dimorphism, sex-specific habitat preferences may exist. To investigate rough-legged hawk sex-specific habitat selection preferences, we equipped 17 rough-legged hawks (n = eight females, nine males) with GPS backpacks on their wintering grounds (n = six study areas) during the winter months of 2014 and 2015 in five states in western North America. I analyzed rough-legged hawk habitat selection in relation to sex at four spatial scales: nocturnal roosting site, 50% core range, 95% winter range, and 200% ecoregion range. Habitat selection variables included land cover, patch size, terrain ruggedness, indicators of anthropogenic disturbance, and measures of interspecific competition. Species and sex-specific preferences existed at each spatial scale, suggesting that hawks balanced competition for roosting and foraging habitat against prey availability and anthropogenic sources of disturbance when selecting habitat. At each spatial scale, female hawks preferentially selected for high quality habitat, while male rough-legged hawks used high as well as lower quality habitat (qualified by the presence of perching structures, human disturbance, and prey catchability). I posit that reversed sexual dimorphism in rough-legged hawks leads to social dominance of female hawks on their wintering grounds and that females may outcompete males for higher quality foraging habitat.
Author: Tom J. Cade
Publisher:
ISBN:
Category : Buteo
Languages : en
Pages : 300
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Author: Douglas John Eno
Publisher:
ISBN:
Category : Hawks
Languages : en
Pages : 148
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Author:
Publisher:
ISBN:
Category : Accipitridae
Languages : en
Pages : 32
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Author: Rick Griffen
Publisher:
ISBN:
Category : Hawks
Languages : en
Pages : 144
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Author: Robert Jeffrey Parsons
Publisher:
ISBN: 9780662262602
Category : Buteo
Languages : en
Pages : 28
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