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Platte River Ecology Study


Appendices


Appendix F. Mean numbers of raptors seen per census along each survey route in the Platte and North Platte River Valleys during 1979 (upper value) and 1980 (lower value).*
Species                _______________________Route**_______________________
                        1         2         3         4         5         6

Rough-legged Hawk 1.0 1.1 2.1 0.8 1.3 2.3 2.0 0.3 0.5 0.5 0.8 5.3 Ferruginous Hawk 0.1 0.0 0.2 0.1 0.4 0.6 0.0 0.0 0.0 0.5 0.3 0.0 Red-tailed Hawk 5.7 4.1 6.3 3.9 4.0 4.7 3.5 2.3 4.3 3.5 4.3 3.5 Golden Eagle 0.1 0.2 0.4 0.l 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bald Eagle 0.4 1.2 7.6 11.2 1.4 0.2 0.3 1.5 8.8 14.0 1.3 0.3 Prairie Falcon 0.3 0.7 0.7 0.4 1.7 1.1 1.3 0.5 0.3 0.5 0.5 0.3 American Kestrel 2.9 5.2 3.9 4.7 9.1 4.6 3.8 5.0 2.3 3.8 10.0 3.0 Marsh Hawk 0.2 0.8 5.3 2.3 2.1 1.6 0.8 0.0 0.8 0.0 0.0 0.0 Goshawk 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cooper's Hawk 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sharp-shinned Hawk 0.0 0.2 0.2 0.0 0.4 0.1 0.0 0.3 0.0 0.3 1.0 0.0 Great Horned Owl 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3
*Based on nine censuses per route in 1979 and four censuses per route in 1980. **Approximate route locations are as follows: Route 1 - 1 mile northwest of the US 34 highway bridge westward to the Alda bridge. Route 2 - Wood River bridge westward to about 1.5 miles west of the Gibbon road. Route 3 - Kearney bridge westward to the Overton bridge. Route 4 - 0.5 mile west of the Overton bridge westward to the Darr bridge. Route 5 - Gothenburg bridge westward to the Maxwell bridge. Route 6 - 0.5 mile west of highway 83 westward to Sutherland (along the North Platte River).

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