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Showing 1 to 6 of 6 for “"great horned owl"”.
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Use of Eastern South Dakota Shelterbelts By Nesting Birds of Prey
… Swainsoni), red-tailed hawk (Buteo jamaicensis), great horned owl (Bubo virginianus) and screech owl (Otus asio). Density figures for 1979 and 1980 were 0.60 and 0.65 birds/km², respectively. IN 1979, 12 active nests contained 28 eggs and 15 fledged young, while in 1980, 11 nests contained 32 eggs …
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Influence of Predation on Least Tern and Piping Plover Productivity Along the Missouri River in South Dakota
… brachyrhynchos), raccoons (Procyon lotor), great horned owls (lma.Q yirginianus), and mink (Mustela yison) were having a significant effect on the survival of piping plover and least tern nests and chicks in this region. American crows, raccoons and mink were associated with 98. 0% of the …
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Ecology of Gray Partridge in North Dakota
… seasons was predation by raptors, mainly the great horned owl (Bubo virginianus). Roadsides were the most important nesting habitat. The best predictor of nest site availability in roadsides was presence of unmowed vegetation from the previous growing season. Available nesting cover was lower …
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Effects of non-commercial thinning on Great Horned Owls on Turnbull National Wildlife Refuge
… thinning. The impacts of thinning on owl species diversity and habitat occupancy have not been studied in these ponderosa pine forests. My study had the following objectives 1) compare forest stand metrics between treatment plots, 2) compare owl species richness between treatment …
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Raptor Use of the Idaho National Engineering Laboratory
… with studies of rough-legged hawks, long-eared owls, and burrowing owls conducted during the late 1970’s and early 1980’s. Road-side raptor surveys were conducted from January through May in 1992 and 1993. Principle species recorded were rough-legged hawks, red-tailed hawks, ferruginous haws, …
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Home range analysis of rehabilitated and released great horned owls (Bubo virginianus) in Denton County, Texas, through radio telemetry.
… yet studies on the survival and adaptation of great horned owls (Bubo virginianus) after release has been neglected to an appreciable extent. The primary objective of this study is to provide quantitative data on the success of rehabilitated and released great horned owls in the North Texas …