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Distribution, Abundance, And Migration Timing Of Greater And Lesser Sandhill Cranes Wintering In The Sacramento-San Joaquin River Delta Region Of California, Gary L. Ivey, Bruce D. Dugger, Caroline P. Herziger, Michael L. Casazza, Joseph P. Fleskes

Proceedings of the North American Crane Workshop

The Sacramento-San Joaquin River Delta region of California (hereafter, Delta region) is an important wintering region for the Central Valley Population of greater sandhill cranes (Grus canadensis tabida) and lesser sandhill cranes (G. c. canadensis), but basic information about the ecology of these birds is lacking to design a biologically sound conservation strategy. During the winters of 2007-08 and 2008-09, we conducted roost counts, roadside surveys, aerial surveys, and tracked radio-marked birds to define the geographic area used by sandhill cranes in the Delta region, document migration chronology, and estimate subspecies-specific abundance. Radio-marked sandhill cranes arrived in our study area …

Size Difference In Whooping Cranes Reared For Two Reintroduction Methods, Richard P. Urbanek, Marianne M. Wellington, Sabrina Servanty

Proceedings of the North American Crane Workshop

We investigated a possible size difference in whooping cranes (Grus americana) captive-reared for 2 reintroduction methods to establish a migratory population in eastern North America. Cranes reared for ultralight aircraft-led migration (UL) to Florida were significantly larger than cranes reared for direct autumn release (DAR) on the natal area in central Wisconsin. Mean tarsal length was 315.5 ± 0.98 (1 SE) and 308.1 ± 1.87 mm, respectively, for UL and DAR males and 296.9 ± 1.03 and 290.8 ± 2.60 mm, respectively, for UL and DAR females. Because of the different rearing schedules, eggs for the DAR method …

Winter And Migratory Habitat Use Of Six Eastern Greater Sandhill Cranes, Hillary L. Thompson, Anne E. Lacy

Proceedings of the North American Crane Workshop

To better understand non-breeding ecology of sandhill cranes (Grus canadensis tabida), we harnessed 6 satellite GPS transmitters to adult cranes from 1 central Wisconsin breeding area. Using location data from these transmitters, we investigated non-breeding movements, including the routes and timing of migration. By combining satellite GPS data with a national land cover dataset, we also described habitat use on stopovers and wintering areas. Sandhill cranes tended to use larger home ranges on long stopovers (>3 days) than on short stopovers (3 days or less). The durations of northward migrations were longer and had more stopovers than …

Serum Chemistry, Blood Gas, And Physiological Measures Of Sandhill Cranes Sedated With Alpha-Chloralose, Richard R. Sim, Barry K. Hartup

Proceedings of the North American Crane Workshop

Capture techniques that lessen handling stress may also lessen pathologic influences on physiologic measures, improving the validity of these measures for use in individual health assessment of freeranging wildlife. Since 1990, the International Crane Foundation (ICF) has successfully used chemical immobilization with alpha-chloralose (AC; C₆H₁₁Cl₃O₆), a chloral derivative of glucose, to facilitate captures of sandhill cranes (Grus canadensis tabida) for ecological studies (Hayes et al. 2003). Although this chemical has been used orally for the immobilization of many species, the physiologic effects of AC are not well understood in cranes. …

Abstracts From Proceedings Of The 13th North American Crane Workshop

Proceedings of the North American Crane Workshop

AGE-SPECIFIC SURVIVAL OF GREATER SANDHILL CRANE COLTS IN NEVADA Chad August, Jim Sedinger, and Chris Nicolai 111

WHOOPING CRANE DISTRIBUTION AND HABITAT USE: PAST, PRESENT, AND FUTURE? Jane Austin, Matthew Hayes, and Jeb Barzen 111

BEHAVIORAL MOVEMENTS OF ARANSAS-WOOD BUFFALO WHOOPING CRANES: ANOMALIES OR INDICATIONS OF WAYS TO FURTHER ENHANCE SPECIES RECOVERY. David Baasch, Mark Bidwell, Wade Harrell, Kris Metzger, Aaron Pearse, and Mary Harner 112

ON NEST SUCCESS IN A REINTRODUCED POPULATION OF WHOOPING CRANES .Jeb Barzen, Sarah Converse, Peter Adler, Elmer Gray, Anne Lacy, Eva Szyszkoski, and Andrew Gossens 113

DETERMINING DIET COMPOSITION AND INGESTION RATE OF CRANES …

Photoperiod And Nesting Phenology Of Whooping Cranes At Two Captive Sites, Glenn H. Olsen

Proceedings of the North American Crane Workshop

Increasing day length is considered to be a stimulus to breeding in many avian species in northern latitudes (Welty 1975). Crane species that breed in high latitudes include Siberian crane (Leucogeranus leucogeranus), lesser sandhill crane (Grus canadensis canadensis), hooded crane (G. monacha), and whooping crane (G. americana). The first captive breeding records for hooded and Siberian cranes were induced with the use of artificially extended photoperiods (Mirande et al. 1996). Most likely, cranes that breed in mid-latitudes also respond to increasing daylight. In 1 study, captive greater sandhill cranes (G. c. …

Historic And Recent Winter Sandhill Crane Distribution In California, Gary L. Ivey, Caroline P. Herziger, David A. Hardt, Gregory H. Golet

Proceedings of the North American Crane Workshop

Understanding the geographic distribution and long-term dynamics of winter foraging areas and night roost sites of sandhill cranes (Grus canadensis) is important to their conservation and management. We studied sandhill crane distribution in California’s Central Valley from December 2012 through February 2013. We mapped observed flock and night roost locations. Flock locations occurred between Tehama County in the north and Kern County in the south. Flocks were concentrated in the northern Sacramento Valley, the Sacramento-San Joaquin Delta, the northern San Joaquin Valley south of Tracy to Mendota (including the lower Stanislaus and Tuolumne River floodplains and the Grasslands …

High Nest Density Of Sandhill Cranes In Central Wisconsin, Jeb A. Barzen, Liying Su, Anne E. Lacy, Andrew P. Gossens, Dorn M. Moore

Proceedings of the North American Crane Workshop

We conducted aerial surveys to determine nest locations of greater sandhill cranes (Grus canadensis tabida) in central Wisconsin, 2001-2003. Helicopter flights covered 8.90 km2 of wetlands in each year, and we found 41 nests in 2001, 50 nests in 2002, and 48 nests in 2003 from 11 wetlands. Our best estimate of nest density (n = 14) included wetlands containing 5 or more nests and averaged 5.25 ± 0.36 (1 SE) nests/km² of wetland. Maximum nest density of larger wetlands in any 1 year was 7.80 nests/km². As some nests had likely failed by …

A Review Of Fall Sandhill Crane Migration Through Indiana, Allisyn-Marie T. Y. Gillet

Proceedings of the North American Crane Workshop

The Indiana Division of Fish and Wildlife conducts surveys from October to December to collect long-term data on greater sandhill cranes (Grus canadensis tabida). Results from these censuses contribute to a fall index of the Eastern Population, which informs wildlife management decisions and research priorities. Recent findings from the annual U. S. Fish and Wildlife Service Fall Sandhill Crane Migration Survey demonstrate a decline in the number of cranes observed at fall staging areas throughout Indiana since 1979. However, nationwide data exhibit a trend of population increase. I provide evidence to show that the apparent decline in the …

An Update On Mortality Of Fledged Whooping Cranes In The Aransas / Wood Buffalo Population, Thomas V. Stehn, Carey L. Haralson-Strobel

Proceedings of the North American Crane Workshop

From winter 1950 through spring 2011, 6,364 whooping cranes (Grus americana) overwintered at Aransas National Wildlife Refuge, or rarely, elsewhere. Documented winter losses amounted to 105 birds dead or disappeared. About 20% of total losses occurred in the wintering area, where birds spend 5 to 6 months of the year including a few birds that over-summer. Losses of white-plumaged whooping cranes on the summering area in Canada appear to be low with only 3 instances documented. The most significant losses seem to occur in migration and may comprise over 80% of the annual mortality. Migration involves only 17-20% of the …

Evaluation Of A Nutraceutical Joint Supplement In Cranes, Kendra L. Bauer, Ellen S. Dierenfeld, Barry K. Hartup

Proceedings of the North American Crane Workshop

Osteoarthritis is a problem that threatens the reproductive capabilities of captive populations of endangered cranes. In our pilot study, we used 5 cranes with a history of unilateral, chronic tarsal pathology in a cross-over design to gauge the effects of the primary ingredient (NEM®, ESM Technologies LLC, Carthage, MO) of the nutraceutical Steadfast® (Novus Nutrition Brands, LLC, St. Charles, MO). We evaluated the ingredient for acceptance, safety, and short-term efficacy. To evaluate efficacy, we collected goniometric measures to determine range of motion in each tarsal joint before and after a 5-week experimental period where NEM® was offered in pelleted feed. …

Effects Of Wind Farms On Sand Hill Crane Play A Occupancy On The Texas High Plains, Laura Navarrete, Kerry L. Griffis-Kyle

Proceedings of the North American Crane Workshop

Wind energy is essential for a shift to carbon-emission free energy, however there has been very little research investigating the disturbance caused by wind farms on the landscape. Texas is a leading state in wind power capacity, and the High Plains of Texas support over 80% of the midcontinent population of sandhill cranes (Grus canadensis) every winter. Historically, cranes used saline lakes for fresh water and predator protection, but recent hydrological changes due to agricultural practices have reduced the availability of the lakes for wintering birds. Playa wetlands currently represent the main source of water and roosting habitat in the …

Distribution, Densities, And Ecology Of Siberian Cranes In The Khroma River Region Of Northern Yakutia In Northeastern Russia, Inga P. Bysykatova, Gary L. Krapu, Nicolai I. Germogenov, Deborah A. Buhl

Proceedings of the North American Crane Workshop

The Siberian crane (Grus leucogeranus) is the third rarest crane species in the world with a breeding range now centered on 3 core areas and a buffer zone in the arctic of northern Yakutia in northeastern Russia. During 16 July-2 August 2009, we undertook ground surveys within the Khroma River core breeding area, surrounding buffer zone, and lands lying to the west of the known breeding range to estimate densities and determine habitat use and social status of Siberian cranes. A total of 142 Siberian cranes were sighted (including 55 pairs) at 54 locations with 32 cranes (including 13 pairs) …

Frontmatter For Proceedings Of The Thirteenth North American Crane Workshop, David A. Aborn, Richard Urbanek

Proceedings of the North American Crane Workshop

List of previous Proceedings of the North American Crane Workshops

Suggested citation formats

PREFACE: The North American Crane Working Group (NACWG) is an organization of professional biologists, aviculturists, land managers, non-professional crane enthusiasts, and others interested in and dedicated to the conservation of cranes and crane habitats in North America. Our group meets approximately every 3 years to exchange information pertaining to sandhill cranes and whooping cranes and occasionally reports about some of the other cranes species. Our meeting in Lafayette, Louisiana, 14-17 April 2014, celebrated the return of whooping cranes to Louisiana for the first time in 60 years. …

Nesting Activity Budgets And Antipredator Behaviors Of Mississippi Sandhill Cranes, Jerome J. Howard, Rose Butler Wall, Lauren Billodeaux Mowbray, Scott G. Hereford

Proceedings of the North American Crane Workshop

We studied activity budgets and antipredator behaviors of Mississippi sandhill cranes (Grus canadensis pulla) to determine if parental behavior influenced nest outcomes. We used infrared motion-activated cameras to capture behavioral sequences from 21 nests over a 2-year period. Overall activity budgets were similar among crane pairs regardless of nest outcome. Specific activity patterns did predict nest outcomes; pairs at unsuccessful nests spent more time away from the nest and more time manipulating nest contents than successful pairs, while pairs at nests that were lost to predation cooperated poorly and started the nest a month later on average than …

Differential Detection Of Territorial And Non-Territorial Greater Sandhill Cranes In Summer, Lindsey F. Mckinney, Jeb A. Barzen, Jason D. Riddle, Shelli A. Dubay, Tim F. Ginnett

Proceedings of the North American Crane Workshop

Abundance estimates allow wildlife managers to make informed management decisions, but differential detectability of individuals can lead to biased estimates of abundance. Our objective was to quantify detectability for non-territorial and territorial sandhill cranes (Grus canadensis tabida) during summer. We hypothesized that territorial sandhill cranes would be detected more often than non-territorial cranes. In 2009, 3 wetland areas were surveyed 2 days per week during the nesting season near Briggsville, Wisconsin. We created capture histories for color-marked territorial (n = 52) and color-marked nonterritorial cranes (n = 23) and used the Huggins closed capture model in …

Habitat Selection By Breeding Sandhill Cranes In Central Wisconsin, Tamara P. Miller, Jeb A. Barzen

Proceedings of the North American Crane Workshop

We used compositional analysis to describe habitat use for a dense population of breeding sandhill cranes (Grus canadensis tabida) in central Wisconsin at 2 spatial scales: selection of home range within a study area and selection of habitats within the home range. Habitat use and home range size were estimated from radio-telemetry data from 12 breeding sandhill crane pairs. Research in Wisconsin that was performed on the landscape level suggests that breeding cranes depend on wetlands and do not select upland habitats. Evaluating habitat selection at different spatial levels, such as during different stages of the breeding season, …

Hematology Results From Experimental Exposure Of Sandhill Cranes To West Nile Virus, Glenn H. Olsen

Proceedings of the North American Crane Workshop

West Nile virus (WNV), a Flavivirus, was introduced into New York City in 1999 (Centers for Disease Control 1999, Enserink 1999). In the past decade the virus has spread across the continental United States and southern Canada, resulting in large numbers of deaths among native bird species (Anderson et al. 1999, Calle et al. 2000). The U.S. Geological Survey (USGS) Patuxent Wildlife Research Center in Laurel, Maryland, is home to the world’s largest collection of cranes. These cranes are used for research and for reintroduction programs. As of 20 October 2016, this collection included 77 of the highly endangered whooping …

Protocol And Results From The First Season Of Captive-Rearing Whooping Cranes For A Non-Migratory Release In Louisiana, Glenn H. Olsen, Jane N. Chandler

Proceedings of the North American Crane Workshop

The principal historic range of the whooping crane (Grus americana) consisted of the tall grass prairies and wetlands of southwest Louisiana, Texas, and parts of Mexico (Allen 1952). Whooping cranes migrated there from Illinois, Iowa, Minnesota, Dakotas, Manitoba, Saskatchewan, Alberta, and breeding grounds of the remnant flock in and near Wood Buffalo National Park, Canada.

The Utility Of Census Or Survey For Monitoring Whooping Cranes In Winter, Bruce H. Pugesek, Thomas V. Stehn

Proceedings of the North American Crane Workshop

We discuss recent changes in the monitoring program for endangered whooping cranes (Grus americana) on their winter habitat in Texas. A 61-year annual census was replaced in the winter of 2011-2012 with a distance sampling procedure. Justification for the change was, in part, based on criticism of the previous methods of counting cranes and the assessment of crane mortality on the wintering grounds. We argue here that the arguments, methods, and analyses employed to discount the census procedure and mortality estimates were applied incorrectly or with flawed logic and assertions. We provide analysis and logical arguments to show …

Use Of Freshwater Ponds By Whooping Cranes During A Drought Period, Karis Ritenour, Elizabeth Smith, Barry K. Hartup

Proceedings of the North American Crane Workshop

Whooping cranes (Grus americana) spend nearly half their annual cycle in coastal habitats within and around the Aransas National Wildlife Refuge Complex (ANWRC) located in the central portion of the Texas Coast. When drought conditions prevail in their winter range and salinities in the local bays exceed 23 parts per thousand (ppt), whooping cranes must seek alternate sources of dietary drinking water (Stehn 2008, Chavez- Ramirez and Wehtje 2012). They begin frequent (often daily) trips to freshwater sources in upland areas. These trips may result in extra energy expenditures that can impact their overall health and ability to …

Proceedings Of The Thirteenth North American Crane Workshop--Abstracts, David A. Aborn, Richard P. Urbanek

Proceedings of the North American Crane Workshop

AGE-SPECIFIC SURVIVAL OF GREATER SANDHILL CRANE COLTS IN NEVADA. Chad August, Jim Sedinger, and Chris Nicolai 111

WHOOPING CRANE DISTRIBUTION AND HABITAT USE: PAST, PRESENT, AND FUTURE? Jane Austin, Matthew Hayes, and Jeb Barzen 111

BEHAVIORAL MOVEMENTS OF ARANSAS-WOOD BUFFALO WHOOPING CRANES: ANOMALIES OR INDICATIONS OF WAYS TO FURTHER ENHANCE SPECIES RECOVERY. David Baasch, Mark Bidwell, Wade Harrell, Kris Metzger, Aaron Pearse, and Mary Harner 112

INFLUENCES ON NEST SUCCESS IN A REINTRODUCED POPULATION OF WHOOPING CRANES. Jeb Barzen, Sarah Converse, Peter Adler, Elmer Gray, Anne Lacy, Eva Szyszkoski, and Andrew Gossens 113

DETERMINING DIET COMPOSITION AND INGESTION RATE OF …

Ten-Year Status Of The Eastern Migratory Whooping Crane Reintroduction, Richard P. Urbanek, Sara E. Zimorski, Eva K. Szyskoski, Marianne M. Wellington

Proceedings of the North American Crane Workshop

From 2001 to 2010, 132 costume-reared juvenile whooping cranes (Grus americana) were led by ultralight aircraft from Necedah National Wildlife Refuge (NWR) in central Wisconsin to the Gulf Coast of Florida on their first autumn migration (ultralight-led or UL), and 46 juveniles were released directly on Necedah NWR during autumn of the hatch year (direct autumn release or DAR). Return rate in spring was 90.5% for UL and 69.2% for DAR, the lower value of the latter attributable to 1 cohort with migration problems. Overall population survival 1 year and from 1 to 3 years post-release was 81% and 84%, …

Sandhill Crane Collisions With Wind Turbines In Texas, Laura Navarrete, Kerry L. Griffis-Kyle

Proceedings of the North American Crane Workshop

The High Plains of the United States have been experiencing a large increase in wind energy generation sites with the American Wind Energy Association reporting an increase across America from 10 total installed gigawatts in 2006 to 60 total installed gigawatts in 2012. (American Wind Energy Association 2012). The High Plains also coincides with the Central Flyway in North America which is used by numerous bird species during migration, some with large bodies and high wing loading including the sandhill cranes (Grus canandensis), whooping cranes (G. americana), and waterfowl. Species such as these tend to be more vulnerable to mortality …

Tylosin Tartrate Promotes Resolution Of Insect Bite Hypersensitivity Reactions In Captive Cranes, Alina Kelman, Barry K. Hartup

Proceedings of the North American Crane Workshop

Previous research has described significant serum protein electrophoretic changes associated with intense periocular swelling in several crane species, typical of Type I hypersensitivity reactions, and thought to be the result of insect bites (Hartup and Schroeder 2006). We reviewed medical records for treatment plans and outcomes from 58 cases of insect hypersensitivity reactions observed in a diverse collection of captive cranes at the International Crane Foundation, Baraboo, Wisconsin. The purpose of this study was to fully describe the epidemiological and clinical characteristics of these cases, and determine the efficacy of treatment of these cases with tylosin tartrate, a macrolide antibiotic. …

Proceedings Of The Thirteenth North American Crane Workshop, 14-17 April 2014, Lafayette, Louisiana, Usa, David A. Aborn, Richard P. Urbanek

Proceedings of the North American Crane Workshop

RESEARCH PAPERS

HABITAT SELECTION BY BREEDING SANDHILL CRANES IN CENTRAL WISCONSIN. Tamara P. Miller and Jeb A. Barzen 1

HIGH NEST DENSITY OF SANDHILL CRANES IN CENTRAL WISCONSIN.Jeb A. Barzen, Liying Su, Anne E. Lacy, Andrew P. Gossens, and Dorn M. Moore 13

DIFFERENTIAL DETECTION OF TERRITORIAL AND NON-TERRITORIAL GREATER SANDHILL CRANES IN SUMMER. Lindsey F. McKinney, Jeb A. Barzen, Jason D. Riddle, Shelli A. Dubay, and Tim F. Ginnett 25

TIMING OF FAMILY DISSOCIATION DOES NOT AFFECT LONG-TERM SURVIVAL ESTIMATES OF SANDHILL CRANE CHICKS Matthew A. Hayes and Jeb A. Barzen 33

A REVIEW OF FALL SANDHILL CRANE MIGRATION …

Observations Of Molt In Reintroduced Whooping Cranes, Anne Lacy, Dan Mcelwee

Proceedings of the North American Crane Workshop

Whooping cranes (Grus americana, WHCR) complete a full flightless molt of primary flight feathers every 2-3 years. The flightless period may represent an important component of the annual cycle; however, molt patterns in WHCR are poorly understood. WHCR undergo a flightless period following ecdysis (feather loss) making them more vulnerable to predation threats, and likely changing their habitat selection from open wetlands to areas with a higher concentration of cover. Studies of molt in wild birds can then be compared to associated habitat needs at that critical time and inform the selection of future release sites elsewhere.

selection of future …

Timing Of Family Dissociation Does Not Affect Long-Term Survival Estimates Of Sandhill Crane Chicks, Matthew A. Hayes, Jeb A. Barzen

Proceedings of the North American Crane Workshop

Sandhill crane (Grus canadensis) chicks depend on their parents beyond fledging, but timing of chick separation from their parents has rarely been quantified and reported. We color-banded and radio-tagged sandhill crane chicks on known natal territories in south-central Wisconsin and monitored family groups to determine age of chick independence. Using a Cormack-Jolly-Seber open population model in program MARK, we estimated survival for chicks that dissociated from their parents prior to fall migration, over winter (including migration), and following spring migration. Of 96 chicks with a known timing of dissociation from their parents, 11 (12%) became independent from their …

Characteristics Of Sandhill Crane Roosts In The Sacramento-San Joaquin Delta Of California, Gary L. Ivey, Bruce D. Dugger, Caroline P. Herziger, Michael L. Casazza, Joseph P. Fleskes

Proceedings of the North American Crane Workshop

The Sacramento-San Joaquin Delta (Delta) region of California is an important wintering region for 2 subspecies of Pacific Flyway sandhill cranes (Grus canadensis): the Central Valley Population of the greater sandhill crane (G. c. tabida) and the Pacific Flyway Population of the lesser sandhill crane (G. c. canadensis). During the winters of 2007-08 and 2008-09 we conducted roost counts, roadside surveys, aerial surveys, and tracked radio-marked birds to locate and assess important habitats for roosting cranes in the Delta. Of the 69 crane night roosts we identified, 35 were flooded cropland sites and 34 were wetland sites. We found that …

Chromic And Iron Oxides As Fecal Markers To Identify Individual Whooping Cranes, Megan E. Brown, Robert C. Doyle, Jane N. Chandler, Glenn H. Olsen, John B. French Jr., David E. Wildt, Sarah J. Converse, Carol L. Keefer, Nucharin Songsasen

Proceedings of the North American Crane Workshop

The whooping crane (Grus americana) is listed as endangered under the IUCN Red List, the United States Endangered Species Act, and the Canadian Species at Risk Act (BirdLife International 2012, CWS and USFWS 2007). A major focus of recovery efforts for this endangered species is reintroduction to establish new populations (CWS and USFWS 2007). Captive populations are critical as a source of individuals for reintroduction efforts and also serve as insurance populations. Currently, there are a total of 157 whooping cranes held in captive breeding centers across North America, with the largest at the USGS Patuxent Wildlife Research Center (PWRC) …