Factors Affecting Red-Tailed Hawk Reproductive Success In Grand Teton National Park, Wyoming
Authors(s): R. N. Smith
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Publication Date: 0000-00-00
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Location: Laramie
Abstract: In Grand Teton National Park, I investigated the relationship between habitat selection and reproductive success by red-tailed hawks (Buteo jamaicensis) during 1992 and 1993. Canopy cover, basal area, slope and laydate explained significant variation in number of eggs layed. Nest-site plots had significantly greater canopy cover, large dbh, greater number of trees, and taller trees than random plots. Nest sites were characterized by northwest aspects, 6 to 10 percent slopes, small mean patch sizes, moderate amounts of edge, and moderate Shannon diversity. Twelve home ranges contained an average of 75 percent open ground and/or low shrub. Blackfly (Simulium spp.) infestations affected overall reproductive success and were attributed to 15 of 63 (24%) nestling mortalities during this study. I found no significant relationship between proximity of occupied nests to sources of human disturbances and reproductive success and this study area.
Keywords: Grand Teton National Park, animal, bird, Aves, ornithology, raptor, red-tailed hawk, Buteo jamaicensi, hawk, habitat, nest, nesting, human activity, population, mortality, disease, parasite, insect, entomology, Insecta, Diptera, blackfly, Simulium spp
| BIBLIOGRAPHY ID | 1309 |
| REF TYPE | Thesis |
| AUTHORS | R. N. Smith |
| PUB DATE | 0000-00-00 |
| DATE STR | 0000-00-00 |
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| DOC TITLE | Factors Affecting Red-Tailed Hawk Reproductive Success In Grand Teton National Park, Wyoming |
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| LOCATION | Laramie |
| ACADEMIC DEPT | Wyoming Cooperative Fish and Wildlife Research Unit |
| UNIVERSITY | University of Wyoming |
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| KEYWORDS | Grand Teton National Park, animal, bird, Aves, ornithology, raptor, red-tailed hawk, Buteo jamaicensi, hawk, habitat, nest, nesting, human activity, population, mortality, disease, parasite, insect, entomology, Insecta, Diptera, blackfly, Simulium spp |
| ABSTRACT | In Grand Teton National Park, I investigated the relationship between habitat selection and reproductive success by red-tailed hawks (Buteo jamaicensis) during 1992 and 1993. Canopy cover, basal area, slope and laydate explained significant variation in number of eggs layed. Nest-site plots had significantly greater canopy cover, large dbh, greater number of trees, and taller trees than random plots. Nest sites were characterized by northwest aspects, 6 to 10 percent slopes, small mean patch sizes, moderate amounts of edge, and moderate Shannon diversity. Twelve home ranges contained an average of 75 percent open ground and/or low shrub. Blackfly (Simulium spp.) infestations affected overall reproductive success and were attributed to 15 of 63 (24%) nestling mortalities during this study. I found no significant relationship between proximity of occupied nests to sources of human disturbances and reproductive success and this study area. |
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| URLADDRESS | http://uwadmnweb.uwyo.edu/fish_wild/abstracts/smith_r/index.html |
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Posted on
Sun, July 31, 2011
by Beringia South