Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
A Preliminary Study Of The Influence Of Breeding Area Density On Sandhill Crane Habitat Selection In South-Central Wisconsin, Sara A. Prussing, Hillary L. Thompson
A Preliminary Study Of The Influence Of Breeding Area Density On Sandhill Crane Habitat Selection In South-Central Wisconsin, Sara A. Prussing, Hillary L. Thompson
Proceedings of the North American Crane Workshop
We hypothesized that territorial sandhill cranes (Grus canadensis) in densely populated breeding areas occupy smaller home ranges that are richer in optimal habitat than those in less densely populated breeding areas. We analyzed satellite telemetry data collected from 2012 to 2016 for 3 and 2 sandhill cranes from dense and less dense breeding areas, respectively. Tracked sandhill cranes in a dense breeding area tended to have smaller home ranges (0.37-14.25 km2) with higher concentrations of wetlands (27%) and row crops (40%) than tracked sandhill cranes in the less dense breeding area (8.80-48.81 km2, 14% …
High Nest Density Of Sandhill Cranes In Central Wisconsin, Jeb A. Barzen, Liying Su, Anne E. Lacy, Andrew P. Gossens, Dorn M. Moore
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 …
Mechanisms Of Habitat Selection Of Reintroduced Whooping Cranes On Their Breeding Range, Kelly J. Maguire, Stanley A. Temple
Mechanisms Of Habitat Selection Of Reintroduced Whooping Cranes On Their Breeding Range, Kelly J. Maguire, Stanley A. Temple
Proceedings of the North American Crane Workshop
We examined several mechanisms that influenced the habitat selection of reintroduced whooping cranes (Grus americana) on their breeding range in the midwestern United States. Visual observations on 56 whooping cranes from 2001 to 2006 provided accurate locations, habitat descriptions, and bird associations. Location information on each bird was mapped to create home range and to describe the habitat. We found evidence that habitat selection in these cranes resulted from multiple mechanisms, including habitat imprinting, philopatry, site tenacity, intra-specific interactions, and environmental stochasticity. The initial home ranges of all cranes contained habitat similar to that in which they were …
Habitat Selection Of Eastern Migratory Whooping Cranes On Their Wintering Grounds, Lara E. A. Fondow, Stanley A. Temple
Habitat Selection Of Eastern Migratory Whooping Cranes On Their Wintering Grounds, Lara E. A. Fondow, Stanley A. Temple
Proceedings of the North American Crane Workshop
As a monitoring technician for the Whooping Crane Eastern Partnership, I (LEAF) noted that birds in years following release selected wintering habitats that differed greatly from those into which they were initially released. An analysis of the habitat preferences of these birds was needed in order to determine any possible implications to the reintroduction efforts. During the winters of 2004-2005 and 2005-2006, I recorded the locations, habitat use, social associations, and behaviors of all migratory whooping cranes (Grus americana) at known locations in Florida. I used compositional analysis to determine whether habitat use was random at the following …
Winter Habitat Selection By A Reintroduced Population Of Migratory Whooping Cranes: Emerging Patterns And Implications For The Future, Lara E. A. Fondow
Winter Habitat Selection By A Reintroduced Population Of Migratory Whooping Cranes: Emerging Patterns And Implications For The Future, Lara E. A. Fondow
Proceedings of the North American Crane Workshop
In an effort to model the reintroduced eastern migratory population of whooping cranes (Grus americana) after the remaining wild whooping crane population, biologists selected the salt marshes of Chassahowitzka National Wildlife Refuge (NWR), Florida as the winter release site for ultra-light led juvenile cranes due to its similarities to Aransas NWR, Texas. Releases began in the fall of 2001, and the 3 subsequent winter seasons have afforded the opportunity to observe whether habitat selection by these whooping cranes would be influenced by the pre-selection of salt marsh. Intensive monitoring efforts each winter have revealed a dominant early-winter pattern. …
Sandhill Crane Nest Habitat Selection And Factors Affecting Nest Success In Northwestern Minnesota, Stephen J. Maxson, John R. Fieberg, Michael R. Riggs
Sandhill Crane Nest Habitat Selection And Factors Affecting Nest Success In Northwestern Minnesota, Stephen J. Maxson, John R. Fieberg, Michael R. Riggs
Proceedings of the North American Crane Workshop
We studied 62 greater sandhill crane (Grus canadensis tabida) nests in northwestern Minnesota during 1989-1991 to document nest habitat use and selection, nest success, and factors associated with nest success. We recorded 15 habitat variables at each nest and at a randomly selected site in the same wetland. Nests were in basins 0.01-601 ha (Median = 2.2 ha) and at water depths 0-35.7 cm (Median = 9.7 cm). Cattail (Typha sp.) was the dominant vegetation at 58.0% of nests while 21.0% were at sites dominated by phragmites (Phragmites australis). Conditional logistic regression models indicated …