Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 63 for “"Owls"”.
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Observations on the breeding ecology of burrowing Owls in Saskatchewan
… regarding breeding biology of burrowing owls (Athene cunicularia) were collected on 98 breeding pairs during 1982 and 1983. Pairs of owls were first observed on the study area in late April with clutch initiation beginning in mid-May. Overall nest success averaged 59 percent with 2.6 …
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Development of Auditory Sensitivity in Barn Owls (Tyto furcata pratincola)
… consistent with CAPs recorded from juvenile barn owls in Europe. ABRs for clicks presented at 5-60 Hz demonstrated increasing amplitudes and decreasing latencies as barn owl chicks aged, while ABRs for clicks presented at 90 Hz were barely distinguishable between adults and juveniles.
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Development and Evaluation of the Online Watershed Learning System (OWLS)
… The Online Watershed Learning System (OWLS) is an interactive cyberlearning system for use in hybrid education. It serves as the end user interface of the Learning Enhanced Watershed Assessment System (LEWAS), a watershed monitoring system for use in research and education. The …
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Nest Site Characteristics and Breeding Biology of Flammmulated Owls in Missoula Valley
… Nest Sites and Breeding Biology of Flammulated Owls in Missoula Valley Chairperson: Len Broberg The Flammulated Owl is listed as a sensitive or species of concern with United States Forest Service, Bureau of Land Management, and Montana Fish, Wildlife and Parks. Despite these listings the …
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Nest Site Characteristics and Breeding Biology of Flammmulated Owls in Missoula Valley
… Nest Sites and Breeding Biology of Flammulated Owls in Missoula Valley Chairperson: Len Broberg The Flammulated Owl is listed as a sensitive or species of concern with United States Forest Service, Bureau of Land Management, and Montana Fish, Wildlife and Parks. Despite these listings the …
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Distribution and population genetics of Northern saw-whet owls in the Southern Appalachians
… distribution and abundance of Northern saw-whet owls (Aegolius acadicus) in the Southern Cherokee and Nantahala National Forests. Pennsylvania Toot Route Protocol (Larzone and Mulvihill 2006) was used to survey routes in the spring/summer of 2013 – 14. Nine birds were found, primarily above 1067 …
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Winter movements and habitat use of northern saw-whet owls at Assateague Island, Maryland
Ten Northern Saw-whet Owls were radio-tracked over two winters (1996 and 1997) at Assateague Island, Maryland. I used the fixed kernel method to calculate home range estimates for seven owls. Ninety-five percent home range sizes averaged 122.9 ha (range from 39.7--261.9 ha) but varied in size and …
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Effects of non-commercial thinning on Great Horned Owls on Turnbull National Wildlife Refuge
… occupancy and detection patterns of Great Horned Owls varied with forest condition and season, respectively, and 4) determine how the frequency of calls and frequency of detection of calls for Great Horned Owls varied between treatments and seasons. I established three stations within three sites …
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On electric owls : implicit life-stories of robots and their impact on human empathy
Robots are moving from factories to people's homes taking on the roles of artificial pets, tutors and companions. If we are to have emotionally engaging robots, we must understand how we can design robots that people feel empathy towards. In this work, I explore one design criteria for such robots: …
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Ecological responses by Mexican spotted owls to environmental variation in the Sacramento Mountains, New Mexico
… to evaluate the hypothesis that Mexican spotted owls (Strix occidentalis lucida) could be conserved by manipulating microhabitat conditions that increased abundance of one or more common prey species. I evaluated this hypothesis by (1) determining which common prey were preferred by this owl, (2) …
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The Influence of Grazing Treatments on Density of Nesting Burrowing Owls on the Cheyenne River Sioux Reservation
… regarding the relationship between burrowing owls and large herbivores. I examined the influence of grazing by bison (Bison bison) and cattle on burrowing owls on the Cheyenne River Sioux Reservation, South Dakota. Burrowing owl densities were sampled in each of three bison-grazed sites, three …
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Utilizing Acoustic Methods to Identify Bat Species, and to Assess Their Habitat Use and Perception of Owls
… utilization; and 3) assessing how bats perceive owls. I acoustically surveyed for bats using an Anabat detector to determine the presence of bat species within a protected area of the Oak Openings Region. I identified the files to species then compared my identification to those of two …
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Factors most closely explaining activity patterns and behavior of northern saw-whet owls in migratory stopover habitat
… night were impacted by environmental covariates. Owls were most active at dusk and dawn and on warmer darker nights with light winds and no precipitation earlier in the fall season. NSWO are known to be very quiet during the nonbreeding season and little is known regarding how owls interact. I …
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Assessing the sensitivity and efficiency of conservation dogs: a case study on Tasmanian masked owls (Tyto novaehollandiae castanops)
… of biodiversity conservation. Like many forest owls, critically endangered Tasmanian masked are both rare and elusive, which has led to data deficiencies which hamper conservation efforts, and makes them an excellent candidate species for exploring the potential for novel survey techniques. …
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Assessing the sensitivity and efficiency of conservation dogs: a case study on Tasmanian masked owls (Tyto novaehollandiae castanops)
… of biodiversity conservation. Like many forest owls, critically endangered Tasmanian masked are both rare and elusive, which has led to data deficiencies which hamper conservation efforts, and makes them an excellent candidate species for exploring the potential for novel survey techniques. …
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Burrowing Owl Distribution and Nest Site Selection in Western South Dakota
… of 2010 and 2011, I surveyed for burrowing owls in 27 counties in western South Dakota that were known to contain prairie dog colonies. I found burrowing owls in 25 of the surveyed counties, but abundance varied across the study area. I used logistic regression models to examine how percent …
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