Winter survey of raptors with notes on avian scavengers in northwestern Colorado. Beaver, D., L. & Roth, J., J. Great Basin Naturalist, 57(2):184-186, 1997. ![Winter survey of raptors with notes on avian scavengers in northwestern Colorado [link]](https://bibbase.org/img/filetypes/link.svg "link")
Website abstract bibtex Winter populations of raptors and scavengers were surveyed along 175 km of rural roads in Moffat County, northwestern Colorado. The survey began in 1988 and is currently continuing, Over the 7 yr of the survey reported here, we found Golden Eagles in high abundance ( hivin x = 5.8 km/eagle) compared to most studies in similar habitat. Bald Eagles were less abundant, but increasing compared to 20 yr earlier. American Rough-legged Hawks were in low abundance, probably due to the predominance of sagebrush habitat along the route. Northern Ravens were seen in low numbers in 4 yr. American Crows were seen in 2 yr. Black-billed Magpies were nearly as abundant ( hivin x = 6.5 km/magpie) as Golden Eagles and often scavenged with them. Magpie and Golden Eagle numbers were significantly correlated over the years of study We conclude that northwestern Colorado is a significant overwintering area for Golden Eagles.
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title = {Winter survey of raptors with notes on avian scavengers in northwestern Colorado},
type = {article},
year = {1997},
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keywords = {Aquila chrysaetos (Accipitridae).,Aquila chrysaetos [Age class distribution / / Wint,Colorado].,Corvus,Corvus (Corvidae).,Corvus brachyrhynchos,Corvus brachyrhynchos (Corvidae).,Corvus corax (Corvidae).,Corvus corax [Colorado / / Moffat County,Ecology,Falconiformes,Falconiformes (Aves).,Land zones,Nearctic region,North America,Pica pica (Corvidae).,Pica pica [Population size / / Winter survey,Population dynamics,Population structure,USA,Winter population survey,east,north,north east,note,of scavengers on rural roads] [Colorado / / Moffat,rural roads,scavengers on rural roads].},
pages = {184-186},
volume = {57},
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abstract = {Winter populations of raptors and scavengers were surveyed along 175 km of rural roads in Moffat County, northwestern Colorado. The survey began in 1988 and is currently continuing, Over the 7 yr of the survey reported here, we found Golden Eagles in high abundance ( hivin x = 5.8 km/eagle) compared to most studies in similar habitat. Bald Eagles were less abundant, but increasing compared to 20 yr earlier. American Rough-legged Hawks were in low abundance, probably due to the predominance of sagebrush habitat along the route. Northern Ravens were seen in low numbers in 4 yr. American Crows were seen in 2 yr. Black-billed Magpies were nearly as abundant ( hivin x = 6.5 km/magpie) as Golden Eagles and often scavenged with them. Magpie and Golden Eagle numbers were significantly correlated over the years of study We conclude that northwestern Colorado is a significant overwintering area for Golden Eagles.},
bibtype = {article},
author = {Beaver, Donald L and Roth, Jan J},
journal = {Great Basin Naturalist},
number = {2}
}
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The survey began in 1988 and is currently continuing, Over the 7 yr of the survey reported here, we found Golden Eagles in high abundance ( hivin x = 5.8 km/eagle) compared to most studies in similar habitat. Bald Eagles were less abundant, but increasing compared to 20 yr earlier. American Rough-legged Hawks were in low abundance, probably due to the predominance of sagebrush habitat along the route. Northern Ravens were seen in low numbers in 4 yr. American Crows were seen in 2 yr. Black-billed Magpies were nearly as abundant ( hivin x = 6.5 km/magpie) as Golden Eagles and often scavenged with them. Magpie and Golden Eagle numbers were significantly correlated over the years of study We conclude that northwestern Colorado is a significant overwintering area for Golden Eagles.","bibtype":"article","author":"Beaver, Donald L and Roth, Jan J","journal":"Great Basin Naturalist","number":"2","bibtex":"@article{\n title = {Winter survey of raptors with notes on avian scavengers in northwestern Colorado},\n type = {article},\n year = {1997},\n identifiers = {[object Object]},\n keywords = {Aquila chrysaetos (Accipitridae).,Aquila chrysaetos [Age class distribution / / Wint,Colorado].,Corvus,Corvus (Corvidae).,Corvus brachyrhynchos,Corvus brachyrhynchos (Corvidae).,Corvus corax (Corvidae).,Corvus corax [Colorado / / Moffat County,Ecology,Falconiformes,Falconiformes (Aves).,Land zones,Nearctic region,North America,Pica pica (Corvidae).,Pica pica [Population size / / Winter survey,Population dynamics,Population structure,USA,Winter population survey,east,north,north east,note,of scavengers on rural roads] [Colorado / / Moffat,rural roads,scavengers on rural roads].},\n pages = {184-186},\n volume = {57},\n websites = {<Go to ISI>://ZOOREC:ZOOR13400009587},\n id = {d5a31ff4-84a1-3276-8f44-308838dc6fe1},\n created = {2015-03-30T17:45:31.000Z},\n file_attached = {true},\n profile_id = {03bdbf9c-0848-344e-95e3-9d552532f95c},\n group_id = {3addd0f7-d578-34d3-be80-24022cc062a1},\n last_modified = {2017-03-14T12:29:49.371Z},\n read = {false},\n starred = {false},\n authored = {false},\n confirmed = {true},\n hidden = {false},\n folder_uuids = {6fee0337-bb6b-48f5-8053-6c6c49a5d60f},\n private_publication = {false},\n abstract = {Winter populations of raptors and scavengers were surveyed along 175 km of rural roads in Moffat County, northwestern Colorado. The survey began in 1988 and is currently continuing, Over the 7 yr of the survey reported here, we found Golden Eagles in high abundance ( hivin x = 5.8 km/eagle) compared to most studies in similar habitat. Bald Eagles were less abundant, but increasing compared to 20 yr earlier. American Rough-legged Hawks were in low abundance, probably due to the predominance of sagebrush habitat along the route. Northern Ravens were seen in low numbers in 4 yr. American Crows were seen in 2 yr. Black-billed Magpies were nearly as abundant ( hivin x = 6.5 km/magpie) as Golden Eagles and often scavenged with them. 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