Nesting raptors in western Wyoming, 1947 and 1975
Authors(s): F. C. Craighead, Jr. and D. P. Mindell
Publication: Journal of Wildlife Management
Publisher:
Publication Date: 0000-00-00
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Location:
Abstract: Numbers of nesting raptors on a 31.1 km2 area in western Wyoming declined 30% between 1947 and 1975. The common raven (Corvus corax) population increased from 3 to 11 pairs, and Swainson's hawk (Buteo swainsoni) and red-tailed hawk (B. jamaicensis) combined decreased from 17 to 9 pairs. Data from 1948, 1978, and 1979 support these changes. Nesting success was 50% less in 1975 than in 1947, and nesting dates for most species were later in 1975. Increases in human disturbance and changes in the natural environment are described and indicated as factors affecting the raptor population decline.
Keywords: Grand Teton National Park, animal studies, raptor, accipter, bird, Aves, ornithology, animal, Swainson's hawk, Buteo swainsoni, red-tailed hawk, Buteo jamaicensis, common raven, Corvus corax, Corvidae, nest, nesting, habitat, population , human activity, management
| BIBLIOGRAPHY ID | 1274 |
| REF TYPE | Journal Article |
| AUTHORS | F. C. Craighead, Jr. and D. P. Mindell |
| PUB DATE | 0000-00-00 |
| DATE STR | 0000-00-00 |
| PUB TITLE1 | Journal of Wildlife Management |
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| DOC TITLE | Nesting raptors in western Wyoming, 1947 and 1975 |
| PAGE DESC | 865-72 |
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| PUB VOLUME | 45 |
| PUB NUMBER | 4 |
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| LIBRARY INFO | RMR-GRTE/Grand Teton National Park/Office of Science and Resource Managemetn/File Cabinet #4/drawer - 1 |
| SOURCE | record #328 |
| KEYWORDS | Grand Teton National Park, animal studies, raptor, accipter, bird, Aves, ornithology, animal, Swainson's hawk, Buteo swainsoni, red-tailed hawk, Buteo jamaicensis, common raven, Corvus corax, Corvidae, nest, nesting, habitat, population , human activity, management |
| ABSTRACT | Numbers of nesting raptors on a 31.1 km2 area in western Wyoming declined 30% between 1947 and 1975. The common raven (Corvus corax) population increased from 3 to 11 pairs, and Swainson's hawk (Buteo swainsoni) and red-tailed hawk (B. jamaicensis) combined decreased from 17 to 9 pairs. Data from 1948, 1978, and 1979 support these changes. Nesting success was 50% less in 1975 than in 1947, and nesting dates for most species were later in 1975. Increases in human disturbance and changes in the natural environment are described and indicated as factors affecting the raptor population decline. |
| NOTES | in Grand Teton National Park database |
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| COPYRIGHT | |
Posted on
Sun, July 31, 2011
by Beringia South