The Altay falcon: Origin, morphology and distribution
D. H. Ellis
1995, Book chapter, Proceedings of the Specialist Workshop, November 14-16, 1995
The systematic position of the Altay falcon (Falco altaicus lorenzi) is perhaps the most enigmatic question lingering in falcon taxonomy. First reported to science in 1811, it has been treated as a race of the gyrfalcon (F. rusticolus), as a race of the saker (F. cherrug), as two separate...
Changing land use: Problems and opportunities
C.S. Robbins, D.K. Dawson, B.A. Dowell
Marcia H. Wilson, Steven A. Sader, editor(s)
1995, Book chapter, Conservation of Neotropical Migratory Birds in Mexico: Symposium-Workshop
Under the pressure of increasing human populations and expanding demands for food and fiber, native tropical and temperate habitats are becoming more restricted, and populations of many resident and migratory birds are declining. Mist net surveys of 111 forest and agricultural sites in Mexico, Belize, and Guatemala show that some...
Neotropical migrant landbirds and landscape changes in Los Tuxtlas, Veracruz, Mexico
A. Estrada, R. Coates-Estrada, E. Diaz-Islas, C.S. Robbins, B.A. Dowell, D. Meritt Jr.
Marcia H. Wilson, Steven A. Sader, editor(s)
1995, Book chapter, Conservation of Neotropical Migratory Birds in Mexico: Symposium-Workshop.
Faced with the problem of habitat loss and with the need to preserve the remaining components of the original avian biodiversity in neotropical regions such as Los Tuxtlas, it is imperative to determine how the neotropical migrant bird species have responded to the anthropogenic alterations of their natural habitats. To...
Comparison of birds detected from roadside and off-road point counts in the Shenandoah National Park
C.M.E. Keller, M.R. Fuller
C. John Ralph, John R. Sauer, Sam Droege, editor(s)
1995, Book chapter, Monitoring bird populations by point counts
Roadside point counts are generally used for large surveys to increase the number of samples. We examined differences in species detected from roadside versus off-road (200-m and 400-ha) point counts in the Shenandoah National Park. We also compared the list of species detected in the first 3 minutes...
Population dynamics of neotropical migratory birds using agriculture-forest mosaics in Campeche, Mexico
M.H. Wilson, M. Berlanga, D. Dawson, P. Wood, J. Sauer, C.S. Robbins
Marcia H. Wilson, Steven A. Sader, editor(s)
1995, Book chapter, Conservation of Neotropical Migratory Birds in Mexico: Symposium-Workshop.
In many areas of the tropics, forests are being converted to agriculture and other uses at a rapid rate. Previous research has documented that forest-breeding migratory birds are distributed across a wide variety of habitat types during midwinter. However, to evaluate the relative importance of different habitat types to wintering...
Water/dredge-filled tubes: A new level of flexibility for wetland managers
Dennis G. Jorde, G.M. Haramis
W.R. Whitman, T. Strange, L. Widjeskog, R. Whittemore, P. Kehoe, L. Roberts, editor(s)
1995, Book chapter, Waterfowl Habitat Restoration, Enhancement and Management in the Atlantic Flyway
Analysis of shoreline change at Sandy Hook, New Jersey using a geographic information system
B. Shaw, J.R. Allen
1995, Book chapter, ACSM/ASPRS Annual Convention & Exposition
Patterns of prey selection by wolves in Denali National Park, Alaska
L. David Mech, T.J. Meier, John W. Burch, Layne G. Adams
Ludwig N. Carbyn, Steven H. Fritts, Dale R. Seip, editor(s)
1995, Occasional Publication of the Canadian Circumpolar Institute 35
The patterns of selection by wolves (Canis lupus) preying on moose (Alces alces), caribou (Rangifer tarandus), and Dall sheep (Ovis dalli) in Denali National Park and Preserve, Alaska were studied from 1986 through early 1992. Wolves and their prey are legally protected or relatively unharvested in most of the area,...
Netting bias in tropical bird studies
R. Coates-Estrada, B.A. Dowell, J.E. Fallon, C.S. Robbins
Marcia H. Wilson, Steven A. Sader, editor(s)
1995, Book chapter, Conservation of Neotropical Migratory Birds in Mexico: Symposium-Workshop
Mist netting is the method most commonly used for gathering quantitative information on birds in the American tropics. Point count surveys or other methods often are used in conjunction with netting to reduce some of the many biases associated with netting, specially the failure of stationary nets within 2 m...
A review of the sensory organs in wolves and their importance to life history
C. S. Asa, L. David Mech
Ludwig N. Carbyn, Steven H. Fritts, Dale R. Seip, editor(s)
1995, Occasional Publication of the Canadian Circumpolar Institute 35
No abstract available....
Pack structure and genetic relatedness among wolf packs in a naturally-regulated population
Thomas J. Meier, John W. Burch, L. David Mech, Layne G. Adams
Ludwig N. Carbyn, Steven H. Fritts, Dale R. Seip, editor(s)
1995, Occasional Publication of the Canadian Circumpolar Institute 35
Observations of wolf pack dynamics over a six-year period in Denali National Park and Preserve, Alaska, found high rates of intraspecific strife, wolf pack dissolution and new pack formation, and the acceptance of new wolves into established packs. These observations corroborate genetic studies that found more genetic links between packs,...
Accuracy of migrant landbird habitat maps produced from LANDSAT TM data: Two case studies in southern Belize
J.P. Spruce, S. Sader, C.S. Robbins, B.A. Dowell
Marcia H. Wilson, Steven A. Sader, editor(s)
1995, Book chapter, Conservation of Neotropical Migratory Birds in Mexico: Symposium-Workshop
The study investigated the utility of Landsat TM data applied to produce geo-referenced habitat maps for two study areas (Toledo and Stann Creek). Locational and non-site-specific map accuracy was evaluated by stratified random sampling and statistical analysis of satellite classification (SCR) versus air photo interpretation results (PIR) for the overall...
On the use of secondary capture-recapture samples to estimate temporary emigration and breeding proportions
W. L. Kendall, J.D. Nichols
P.M. North, J.D. Nichols, editor(s)
1995, Book chapter, Statistics and ornithology. Proceedings of the 4th EURING technical meeting, 19-24 September, 1994
The use of the Cormack- Jolly-Seber model under a standard sampling scheme of one sample per time period, when the Jolly-Seber assumption that all emigration is permanent does not hold, leads to the confounding of temporary emigration probabilities with capture probabilities. This biases the estimates of capture probability when...
Delineating bird populations using ring recoveries
G.W. Pendleton, J.R. Sauer
P.M. North, J.D. Nichols, editor(s)
1995, Book chapter, Statistics and Ornithology. Proceedings of the 4th EURING Technical Meeting, 19-24 September, 1994.
We delineate bird populations using cluster analysis to group ringing sites based on pairwise comparisons of recoveries. Clustering provides a quantitative (but non-unique) grouping that can be used to examine the relationships of bird distributions at both local and regional geographic scales. Clustering is based on similarity matrices...
Estimating bird species richness from capture and count data
D.K. Dawson, J.R. Sauer, P.A. Wood, M. Berlanga, M.H. Wilson, C.S. Robbins
P.M. North, J.D. Nichols, editor(s)
1995, Book chapter, Statistics and Ornithology. Proceedings of the 4th EURING Technical Meeting, 19-24 September, 1994
We used capture-recapture methods to estimate bird species richness from mist-net and point-count data from a study area in Campeche, Mexico. We estimated species richness separately for each survey technique for two habitats, forest and pasture, in six sampling periods. We then estimated richness based on species' detections...
Population trends of the loggerhead shrike from the North American Breeding Bird Survey
B.G. Peterjohn, J.R. Sauer
Reuven Yosef, Fred E. Lohrer, editor(s)
1995, Book chapter, Shrikes (Laniidae) of the World: Biology and Conservation. Proceedings of the First International Shrike Symposium
North American Breeding Bird Survey data indicated a general decline in Loggerhead Shrike (Lanius ludovicianus) populations during 1966-1993. At the continental level, shrikes declined at an average rate of 2.9% per year. Average rates of regional declines varied from 2.5-3.4% annually. These declines were prevalent in most states, provinces, and...
Geographic patterns in relative abundances and population trends of breeding and wintering loggerhead shrikes in North America
J.R. Sauer, Sandra Orsillo, B.G. Peterjohn
Reuven Yosef, Fred E. Lohrer, editor(s)
1995, Book chapter, Shrikes (Laniidae) of the World: Biology and Conservation. Proceedings of the First International Shrike Symposium
In North America, the Breeding Bird Survey and the Christmas Bird Count provide data that are collected at sites visited each year, and the site-specific data can be placed in a Geographic Information System and smoothed to produce contour maps of relative abundance and trend for the United States and...
Artificial insemination and cryopreservation of semen from nondomestic birds
G.F. Gee
M.R. Bakst, G.J. Wishart, editor(s)
1995, Book chapter, Proceedings of the First International Symposium on the Artificial Insemination of Poultry
Studies of Al and cryopreservation of semen from nondomestic birds began because of the increased emphasis on conservation of avian species threatened with extinction. Over the years, aviculturists have developed techniques for Al and cryopreservation of semen obtained from a variety of birds ranging from passerines to Andean condors. Generally,...
Andean condor medicine, reproduction, and husbandry
Glenn H. Olsen, J. W. Carpenter
1995, Book chapter, 1995 Main Conference Proceedings, Annual Conference and Expo
Wildlife
F. J. Dein, Glenn H. Olsen
Bernard E. Rollin, M. Lynne Kesel, editor(s)
1995, Book chapter, The experimental animal in biomedical research, volume II: Care, husbandry, and well-being, an overview by species
No abstract available....
Modeling shoreline dynamics at Sandy Hook, New Jersey, USA
J.R. Allen, B. Shaw, A.F. Lange
1995, Book chapter, CoastGIS '95, International Symposium on GIS and Computer Mapping for Coastal Zone Management, Cork, Ireland February 3-5, 1995
What do we know about wolves and what more do we need to learn?
L. David Mech
Ludwig N. Carbyn, Steven H. Fritts, Dale R. Seip, editor(s)
1995, Occasional Publication of the Canadian Circumpolar Institute 35
No abstract available....
Ornithology at the U.S. National Museum of Natural History
Richard C. Banks
William E. Davis Jr., Jerome A. Jackson, editor(s)
1995, Book chapter, Contributions to the History of North American Ornithology
Survival and growth of nursery-stock woody plants in constructed forested wetlands in central Maryland
Matthew C. Perry, A.S. Deller, S.B. Pugh, M.E. Banker
Mary C. Landin, editor(s)
1995, Book chapter, National Interagency Workshop on Wetlands: Technology Advances for Wetlands Science
Productivity of saker falcons (Falco cherrug) in Mongolia
D. H. Ellis, Merlin H. Ellis, Pu Tsengeg
1995, Book chapter, Proceedings of the Specialist Workshop, November 14-16, 1995. Abu Dhabi, United Arab Emirates
During the summers 1994-1995, over 80 eyries were located on over 10,000 km of survey routes in Mongolia. Where possible, production and hatch dates were assessed when the eyries were found. For 75 nesting attempts, breeding success was found to be 92%. The average number of young...
