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- Grus canadensis (12)
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- Migratory population (2)
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Articles 31 - 44 of 44
Full-Text Articles in Ornithology
Whooping Crane Titers To Eastern Equine Encephalitis Vaccinations, Glenn H. Olsen, Erin Kolski, Jeff S. Hatfield, Douglas E. Docherty
Whooping Crane Titers To Eastern Equine Encephalitis Vaccinations, Glenn H. Olsen, Erin Kolski, Jeff S. Hatfield, Douglas E. Docherty
Proceedings of the North American Crane Workshop
In 1984 an epizootic of eastern equine encephalitis (EEE) virus killed 7 of 39 (18%) whooping cranes in captivity at the Patuxent Wildlife Research Center in Laurel, Maryland, USA. Since that time whooping cranes have been vaccinated with a human EEE vaccine. This vaccine was unavailable for several years, necessitating use of an equine vaccine in the cranes. This study compared the antibody titers measured for three years using the human vaccine with those measured for two years using the equine form. Whooping cranes developed similarly elevated titers in one year using the human vaccine and both years using the …
An Adaptive Approach To Channel Management On The Platte River, Kent Pfeiffer, Paul Currier
An Adaptive Approach To Channel Management On The Platte River, Kent Pfeiffer, Paul Currier
Proceedings of the North American Crane Workshop
The mission of the Platte River Whooping Crane Maintenance Trust is to protect and manage habitat in the Platte valley for whooping cranes, sandhill cranes, and other migratory birds. The plan for meeting this mission calls for the creation and maintenance of eleven habitat complexes distributed through the central Platte valley. Each habitat complex is intended to consist of 1,000 ha of wet meadows and adjacent roost habitat of open, unvegetated river channel. Reduced flows in the river have caused its channel to narrow with banks that are often heavily wooded. Formerly mobile sand bars have stabilized and support dense …
The Status Of The Common Crane (Grus Grus) In Europe - Breeding, Resting, Migration, Wintering, And Protection, Hartwig Prange
The Status Of The Common Crane (Grus Grus) In Europe - Breeding, Resting, Migration, Wintering, And Protection, Hartwig Prange
Proceedings of the North American Crane Workshop
At present, about 160,000 and 100,000 cranes are migrating on the West-European and on the Baltic-Hungarian routes, respectively, from the northern, middle, and northeastern parts of Europe. On both routes, the resting maxima, simultaneously determined since the 1980’s, has increased three-fold. This increase in migratory cranes is the result of shorter migration routes with higher return rates, a growing passage from the northwestern part of Russia beginning in the 1990’s, and a protected status in the European Union at breeding as well as at many resting and wintering sites. Hence, the cranes learn to find and use new breeding and …
Migration Chronology, Routes, And Distribution Of Pacific Flyway Population Lesser Sandhill Cranes, Michael J. Petrula, Thomas C. Rothe
Migration Chronology, Routes, And Distribution Of Pacific Flyway Population Lesser Sandhill Cranes, Michael J. Petrula, Thomas C. Rothe
Proceedings of the North American Crane Workshop
Managers of migratory game birds require accurate information about bird movements to delineate populations, protect important habitats, and regulate harvest. Data describing movements of sandhill cranes (Grus canadensis) belonging to the Pacific Flyway Population (PFP) are lacking. We used satellite telemetry to monitor movements of PFP lesser sandhill cranes (Grus c. canadensis) captured in the upper Cook Inlet and Bristol Bay regions of Alaska. Satellite transmitters were deployed on 19 flightless young (colts) and 3 adults over 3-years (2000-2002). Chronology, routes, and stopover or staging areas were identified for fall and spring migration periods. On average, …
Sandhill Crane Use Of Managed Chufa Wetlands In New Mexico, John P. Taylor, Loren M. Smith
Sandhill Crane Use Of Managed Chufa Wetlands In New Mexico, John P. Taylor, Loren M. Smith
Proceedings of the North American Crane Workshop
Natural wetland food plants help meet energetic requirements for sandhill cranes (Grus canadensis). Chufa (Cyperus esculentus) tubers were found to be a prominent item in the winter diet of cranes in New Mexico and Texas. In 1996 and 1997, chufa production was compared among mowing, discing, and sustained-flooding treatments intended to enhance chufa tuber growth. Sandhill crane numbers were monitored on wetlands during winter flooding to determine treatment preferences. No differences in sandhill crane use of treated wetlands were found in 1996, however in 1997, crane use was higher on disked field than sustained flood fields …
Use Of Wading Birds As Indicators Of Potential Whooping Crane Wintering Habitat, Dawn A. Sherry, Felipe Chavez-Ramirez
Use Of Wading Birds As Indicators Of Potential Whooping Crane Wintering Habitat, Dawn A. Sherry, Felipe Chavez-Ramirez
Proceedings of the North American Crane Workshop
A search for suitable wintering sites on which to establish another migratory population of whooping crane (Grus americana) has been conducted and will continue. In addition to an evaluation of food availability for whooping cranes, wading birds that overlap highly in patterns of habitat utilization with whooping cranes may be useful as indirect indicators of suitable whooping crane habitat. We determined the extent to which several species of wading birds overlap in patterns of habitat utilization with whooping cranes on their current wintering grounds. We conducted aerial surveys of whooping cranes and wading birds at Aransas and Matagorda …
Patterns Of Food Use Of Wintering Whooping Cranes On The Texas Coast, Craig M. Westwood, Felipe Chavez-Ramirez
Patterns Of Food Use Of Wintering Whooping Cranes On The Texas Coast, Craig M. Westwood, Felipe Chavez-Ramirez
Proceedings of the North American Crane Workshop
Whooping Crane (Grus americana) fecal samples were collected from Matagorda Island National Wildlife Refuge (MINWR) during winter and fall of 1993-94 (Winter-1; n = 59), and Aransas National Wildlife Refuge (ANWR) during winter and fall of 1993-94 (n = 102) and 1994-95 (Winter-2; n = 257) to study crane diets and compare patterns of food use in these areas. Food items varied between areas, across months, and between years in both frequency and percent volume. Blue crab (Callinectes sapidus), wolfberry fruit (Lycium carolinianum), horn snail (Cerithidea pliculasa), razor clam (Tagellus plebius), …
Proceedings Of The Ninth North American Crane Workshop: Preface, Dedications, & Awards
Proceedings Of The Ninth North American Crane Workshop: Preface, Dedications, & Awards
Proceedings of the North American Crane Workshop
These proceedings include papers presented at the Ninth North American Crane Workshop in Sacramento, California in 2003. In addition, there are a few other papers included in this volume of the proceedings that were not presented at the workshop but were appropriate to include here. I would like to thank previous editors of the proceedings Dave and Cathy Ellis and Richard Urbanek for providing advice and suggestions for dealing with the current proceedings. Others provided input and suggestions and they were all well received and appreciated. I want to thank the associate editors of this issue of the proceedings and …
Zur Nahrungsökologie Des Uhus Bubo Bubo In Der Mongolei = Feeding Ecology Of The Eagle Owl Bubo Bubo In Mongolia, Thomas Hoffmann, Michael Stubbe, D. Heidecke, R. Piechocki, R. Samjaa, J. Erfurt, D. Sumjaa
Zur Nahrungsökologie Des Uhus Bubo Bubo In Der Mongolei = Feeding Ecology Of The Eagle Owl Bubo Bubo In Mongolia, Thomas Hoffmann, Michael Stubbe, D. Heidecke, R. Piechocki, R. Samjaa, J. Erfurt, D. Sumjaa
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
This paper presents further results on the food ecology of the eagle owl in western Mongolia for the years 1984 to 1992. Additional to the already known sites we investigated two new resting places. At least 27 mammal and 17 bird species were recorded. The results confirm previous studies. Small to medium sized mammals (Cricetidae, Dipodidae, Arvicolidae) dominate the prey of the eagle owl whereas birds and invertebrates are less important.
Initial Training Of Cranes For An Airship Migration, David H. Ellis, Glenn H. Olsen, Jared Kwitowski
Initial Training Of Cranes For An Airship Migration, David H. Ellis, Glenn H. Olsen, Jared Kwitowski
Proceedings of the North American Crane Workshop
We describe the first year of our efforts to train cranes to accept the unnatural stimuli associated with being transported south in cages suspended beneath an airship. All 4 experimental cranes readily acclimated to entering a suspended cage and were trained to accept being jostled while in the cage, even when the cage was transported in the back of a pickup truck. With minor changes, the training protocol is ready for use in an actual airship migration.
Crop Depredations By Cranes At Daursky State Biosphere Reserve, Siberia, Stephen H. Bouffard, John E. Cornely, Oleg A. Goroshko
Crop Depredations By Cranes At Daursky State Biosphere Reserve, Siberia, Stephen H. Bouffard, John E. Cornely, Oleg A. Goroshko
Proceedings of the North American Crane Workshop
Crop depredations by staging cranes have been an annual problem at Daursky State Biosphere Reserve in southern Siberia. In September 2001 we met at Daursky when crane populations peaked to investigate the problem and suggest methods to reduce damages. Peak of crane staging coincided with grain harvest. We counted ≈ 30,000 cranes of 5 species, primarily demoiselles (Anthropoides virgo), in the area. Poor grain yields and cooperative farming systems discouraged efforts to reduce damage. Moving crops further from roost areas may be the most reasonable short term control method, but it’s effectiveness is yet untested. Hazing, lure crops …
Annual Movements Of Pacific Coast Sandhill Cranes, Gary L. Ivey, Caroline P. Herziger, Thomas J. Hoffmann
Annual Movements Of Pacific Coast Sandhill Cranes, Gary L. Ivey, Caroline P. Herziger, Thomas J. Hoffmann
Proceedings of the North American Crane Workshop
The subspecies composition of migratory sandhill cranes (Grus canadensis) which stage and winter along the Lower Columbia River in northwest Oregon and southwest Washington is uncertain, but may include all 3 using the Pacific Flyway: lesser (G. c. canadensis), Canadian (G. c. rowani), and greater (G. c. tabida). However, the status of rowani has been debated. During 2001-02, we captured and marked 8 cranes using a noose line trapping technique, and attached Platform Transmitter Terminals (PTTs) to 6 to ascertain locations of their breeding areas, migration corridors and winter sites. Morphometric data …
Techniques Employed To Capture Whooping Cranes In Central Florida, Martin J. Folk, Stephen A. Nesbitt, Stephen T. Schwikert, James A. Schmidt, Kathleen A. Sullivan, Thomas J. Miller, Stephen B. Baynes, Jeannette M. Parker
Techniques Employed To Capture Whooping Cranes In Central Florida, Martin J. Folk, Stephen A. Nesbitt, Stephen T. Schwikert, James A. Schmidt, Kathleen A. Sullivan, Thomas J. Miller, Stephen B. Baynes, Jeannette M. Parker
Proceedings of the North American Crane Workshop
During the course of re-introduction of a non-migratory flock of whooping cranes to Florida (1993-2002) a variety of techniques were used to capture 105 free-living birds. The most commonly used technique was hand-capture from a feed trough blind (45 birds). Whooping cranes were also captured by use of snares, several types of nets, and by hand. All techniques were relatively safe and posed little risk to the birds, a primary concern when dealing with rare birds. We found it useful to employ a diversity of techniques because some methods work better than others under differing circumstances. Capturing whooping cranes for …
Migration Routes, Staging Areas, And Wintering Grounds Of Sandhill Cranes That Breed In Siberia, Gary L. Krapu, David A. Brandt
Migration Routes, Staging Areas, And Wintering Grounds Of Sandhill Cranes That Breed In Siberia, Gary L. Krapu, David A. Brandt
Proceedings of the North American Crane Workshop
We determined breeding sites, migration routes, spring and fall staging areas, and wintering grounds for sandhill cranes (Grus canadensis) from the midcontinent population that nest in Siberia. Our results are from 30 PTT-marked individuals captured and marked along the Platte and North Platte Rivers in Nebraska. Findings indicate the species breeds across a vast area of northeastern Siberia extending at least 1500 km west from near the Bering Strait to the Kolymskaya Plains with most breeding confined to within 75 km of the coast. We describe when PTT-tagged cranes arrived at breeding sites in Siberia, duration of stay, …