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Biology and conservation of owls of the Northern Hemisphere: 2nd International symposium
| Authors: | James R. Duncan, David H. Johnson, Thomas H. Nicholls |
| Year: | 1997 |
| Type: | General Technical Report |
| Station: | Northern Research Station |
| DOI: | https://doi.org/10.2737/NC-GTR-190 |
| Source: | General Technical Report NC-190. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station |
Download (PDF 11.79 MB): https://research.fs.usda.gov/download/treesearch/10254.pdf
Abstract
The proceeding contains 91 papers authored by 143 people from 13 countries covering biology, ecology, monitoring, habitat-use, status conservation, education, genetics, toxicology, diet, migration, mortality and related topics concerning owls of the Northern Hemisphere. Thirty-three owl species are discussed. Information presented will be useful in owl conservation, management, identifying research needs and defining conservation priorities.Titles contained within Biology and conservation of owls of the Northern Hemisphere: 2nd International symposium
- Official opening remarks: Manitoba natural resources
- Official opening remarks: Manitoba's biodiversity and sustainable development
- Official opening remarks: bird conservation in Canada
- Banquet speaker: remaining choices
- Summary and concluding remarks
- The hunting behavior of eastern screech-owls (Otus asio)
- Albinism in the Great Gray Owl (Strix nebulosa) and other owls
- Breeding biology of the Barn Owl (Tyto alba) in the Lower Mainland of British Columbia
- Dispersal movements of juvenile Mexican Spotted Owls (Strix occidentalis lucida) in New Mexico
- Barn Owl (Tyto alba) and Long-Eared Owl (Asio otus) mortality along motorways in Bourgogne-Champagne: report and suggestions
- Corticosterone and Dispersal in Western Screech-Owls (Otus kennicottii)
- Food habits of the Northern Spotted Owl (Strix occidentalis caurina) at six nest sites in Washington?s east Cascades
- Autumn migration of Northern Saw-whet Owls (Aegolius acadicus) in the Middle Atlantic and Northeastern United States: what observations from 1995 suggest
- A spatial analysis of the Burrowing Owl (Speotyto cunicularia) population in Santa Clara County, California, using a geographic information system
- Modeling critical habitat for Flammulated Owls (Otus flammeolus)
- Burrowing (Speotyto cunicularia) Owl survival in prairie Canada
- Dispersal behavior and survival of juvenile Tawny Owls (Strix aluco) during the low point in a vole cycle
- Seasonal distribution of the Great Gray Owl (Strix nebulosa) in Southwestern Alberta
- Burrowing Owl (Speotyto cunicularia) monitoring and management activities in Manitoba, 1987-1996
- Northern Saw-whet Owls (Aegolius acadicus) captured at Cape May Point, NJ, 1980-1994: comparison of two capture techniques
- Habitat associated with Barred Owl (Strix varia) locations in southeastern Manitoba: a review of a habitat model
- You are what you eat: stable isotope ecology of owl diets in Alberta, Canada
- Sex-biased dispersal of young Western Screech-owls (Otus kennicottii) in southwestern Idaho
- Comparative study of general public owl knowledge in Costa Rica, Central America and Malawi, Africa
- Autumn populations and movements of migrant Northern Saw-whet Owls (Aegolius acadicus) at Little Suamico, Wisconsin
- The influence of broadcast tape-recorded calls on captures of fall migrant Northern Saw-whet Owls (Aegolius acadicus) and Long-eared Owls (Asio otus)
- Monitoring Boreal Forest Owls in Ontario using tape playback surveys with volunteers
- Great Horned Owl (Bubo virginianus) productivity and home range characteristics in a shortgrass prairie
- Size, dimorphism, and related characteristics of Ciccaba owls from Guatemala
- Habitat selection of Northern Saw-whet Owls (Aegolius acadicus brooksi) on the Queen Charlotte Islands, British Columbia
- Matrix population models as a tool in development of habitat models
- Testosterone, aggression, and territoriality in male Western Screech-owls (Otus kennicottii): results from preliminary experiments
- A Sensitivity Analysis of a Map of Habitat Quality for the California Spotted Owl (Strix occidentalis occidentalis) in southern California
- Banding of Asio Owls in south-central Saskatchewan
- Black-flies and Leucocytozoon spp. as causes of mortality in juvenile Great Horned Owls in the Yukon, Canada
- Distribution, abundance, and habitat use of territorial male Boreal Owls (Aegolius funereus) in northeast Minnesota
- Habitat use and movements of breeding male Boreal Owls (Aegolius funereus) in northeast Minnesota as determined by radio telemetry
- Territories of Flammulated Owls (Otus flammeolus): is occupancy a measure of habitat quality?
- Metapopulation dynamics of a Burrowing Owl (Speotyto cunicularia) population in Colorado
- Is the northern Saw-whet Owl (Aegolius acadicus) nomadic?
- 20-year study of Barn Owl (Tyto alba) reproduction in northern Utah
- Flammulated Owls (Otus flammeolus) breeding in deciduous forests
- Barred Owl (Strix varia) nest site characteristics in the boreal forest of Saskatchewan, Canada
- Population densities of northern Saw-whet Owls (Aegolius acadicus) in degraded boreal forests of the southern Appalachians
- Importance of prairie wetlands and avian prey to breeding Great Horned Owls (Bubo virginianus) in Northwestern North Dakota
- Mortality causes in British Barn Owls (Tyto alba), based on 1,101 carcasses examined during 1963-1996
- Territorial and nesting behavior in southern Boobook (Ninox novaeseelandiae)
- Landscape patterns around Northern Spotted Owl (Strix occidentalis caurina) nest sites in Oregon's central Coast Ranges
- Clutch size variation in Tawny Owls (Strix aluco) from adjacent valley systems: can this be used as a surrogate to investigate temporal and spatial variations in vole density?
- Nest sites and reproductive success of the Barred Owls (Strix varia) in Michigan
- Effectiveness of broadcast surveys in determining habitat use of Ferruginous Pygmy-owls (Glaucidium brasilianum) in southern Texas
- Comparison of Food Habits of the Northern Saw-whet Owl (Aegolius acadicus) and the Western Screech-owl (Otus kennicottii) in Southwestern Idaho
- Non-territorial floaters in Great Horned Owls (Bubo virginianus)
- Monitoring Finnish Owls 1982-1996: methods and results
- Abundance and population characteristics of Northern Spotted Owls (Strix occidentalis caurina) in Olympic National Park, Washington
- Population dynamics of Lanyu Scops Owls (Otus elegans botelensis)
- Owls as biomonitors of environmental contamination
- Current status, distribution, and conservation of the Burrowing Owl (Speotyto cunicularia) in midwestern and western North America
- Male Eastern Screech-owl (Otus asio) roosting behavior: possible effects from nesting stage and nest type
- Auditory surveys for Northern Saw-whet Owls (Aegolius acadicus) in southern Wisconsin 1986-1996
- Owl broadcast surveys in the Foothills Model Forest, Alberta, Canada
- An update of demographic estimates for the Northern Spotted Owls (Strix occidentalis caurina) from Oregon's Central Coast Ranges
- Breeding population of the Great Gray Owl (Strix nebulosa Forster) in Belarus: summary of recent knowledge
- Comparative food niche analysis of Strix Owls in Belarus
- Strategies for protecting Western Burrowing Owls (Speotyto cunicularia hypugaea) from human activities
- Flammulated Owl (Otus flammeolus) population and habitat inventory at its northern range limit in the Southern Interior of British Columbia
- Habitat fragmentation and the Burrowing Owls (Speotyto cunicularia) in Saskatchewan
- The effects of predator exclusion and food supplementation on Burrowing Owl (Speotyto cunicularia) population change in Saskatchewan
- Great Gray Owl (Strix nebulosa) breeding habitat use within altered forest landscapes
- Conservation implications of a multi-scale study of Flammulated Owl (Otus flammeolus) habitat use in the Northern Rocky Mountains, USA
- Winter owl surveying in central Alberta
- Increase in distribution records of owl species in Manitoba based on a volunteer nocturnal survey using Boreal Owl (Aegolius funereus) and Great Gray Owl (Strix nebulosa) playback
- Intra- and interspecific calling in a Tropical Owl Community
- Increasing mist net captures of migrant Northern Saw-whet Owls (Aegolius acadicus) with an audiolure
- A method for locating Barred Owl (Strix varia) nests in the southern boreal forest of Saskatchewan
- Owls in the Moscow region: the results of a 10-year study
- Estimation of food consumption from pellets cast by captive Ural Owls (Strix uralensis)
- Wing loading in 15 species of North American owls
- Preliminary investigation of vocal variation in the Mexican Spotted Owl (Strix occidentalis lucida): would vocal analysis of the four-note location call be a useful field tool for individual identification?
- Range expansion of Northern Hawk Owls (Surnia ulula) and Boreal Owls (Aegolius funereus) in Nova Scotia
- Snowy Owl (Nyctea scandiaca) reproduction in relation to lemming population cycles on Wrangel Island
- World distribution of Owlaholics
- The importance of old growth refugia in the Yukon boreal forest to cavity-nesting owls
- Sex and age composition of Great Gray Owls (Strix nebulosa), winter 1995/1996
- Observations of wintering Snowy Owls (Nyctea scandiaca) at Logan Airport, East Boston, Massachusetts from 1981-1997
- Using tape playback of the staccato song to document Boreal Owl (Aegolius funereus) reproduction
- Landscape features and characteristics of Great Gray Owl (Strix nebulosa) nests in fragmented landscapes of central Alberta
- Report on the nocturnal raptor monitoring workshop
- Report on the Western Burrowing Owl (Speotyto cunicularia) conservation workshop
- The role and management implications of modeling owl populations and the habitats they occupy
- "Mission possible: owls in education"