Ornithology Commons^™

Wintering Ecology Of Adult North American Ospreys, Brian E. Washburn, Charles J. Henny, Mark S. Martell, Richard O. Bierregaard, Brian S. Dorr, Thomas J. Olexa

Brian S Dorr

North American Ospreys (Pandion haliaetus) typically migrate long distances to their wintering grounds in the tropics. Beyond the general distribution of their wintering range (i.e., the Caribbean, South America, and Central America), very little is known about the wintering ecology of these birds. We used satellite telemetry to determine the duration of wintering period, to examine the characteristics of wintering areas used by Ospreys, and to quantify space use and activity patterns of wintering Ospreys. Adult Ospreys migrated to wintering sites and exhibited high wintering site fidelity among years. Overall, Ospreys wintered on river systems (50.6%) more than on lakes …

Next-Generation Field Guides, Elizabeth J. Farnsworth, Miyoko Chu, W. John Kress, Amanda K. Neill, Jason H. Best, John Pickering, Robert D. Stevenson, Gregory W. Courtney, John K. Vandyk, Aaron M. Ellison

John K. VanDyk

To conserve species, we must first identify them. Field researchers, land managers, educators, and citizen scientists need up-to-date and accessible tools to identify organisms, organize data, and share observations. Emerging technologies complement traditional, book-form field guides by providing users with a wealth of multimedia data. We review technical innovations of next-generation field guides, including Web-based and stand-alone applications, interactive multiple-access keys, visual-recognition software adapted to identify organisms, species checklists that can be customized to particular sites, online communities in which people share species observations, and the use of crowdsourced data to refine machine-based identification algorithms. Next-generation field guides are user …

Música De Las Grullas: Una Historia Natural De Las Grullas De América, Paul A, Johnsgard, Enrique H. Weir, Karine Gil-Weir

Zea E-Books Collection

En un sábado mágico de marzo, maneje con un estudiante de postgrado hasta el valle central del Platte, al oeste de Grand Island, tanto para ver la migración primaveral de aves acuáticas como la de las grullas grises. Tal vez fue una suerte que yo no estuviera preparado emocionalmente para ver como innumerables grullas salpicaban el cielo de horizonte a horizonte, o girando grácilmente sus cabezas como si estuvieran atrapados en algún torbellino de ultra cámara lenta, su vibrato produce una cadencia descendente como la música de un coro aviar angelical. Desde los días de mi infancia, cuando, por primera …

Assessing Landscape Constraints On Species Abundance: Does The Neighborhood Limit Species Response To Local Habitat Conservation Programs?, Christopher F. Jorgensen, Larkin A. Powell, Jeffrey J. Lusk, Andrew A. Bishop, Joseph J. Fontaine

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Landscapes in agricultural systems continue to undergo significant change, and the loss of biodiversity is an ever-increasing threat. Although habitat restoration is beneficial, management actions do not always result in the desired outcome. Managers must understand why management actions fail; yet, past studies have focused on assessing habitat attributes at a single spatial scale, and often fail to consider the importance of ecological mechanisms that act across spatial scales. We located survey sites across southern Nebraska, USA and conducted point counts to estimate Ring-necked Pheasant abundance, an economically important species to the region, while simultaneously quantifying landscape effects using a …

Survival, Abundance, And Geographic Distribution Of Temperate-Nesting Canada Geese (Branta Canadensis) In Arkansas, Margaret Eliese Ronke

Graduate Theses and Dissertations

Temperate-nesting Canada geese in Arkansas have grown in abundance and range since reintroduction in the 1980s. The Arkansas Game and Fish Commission uses harvest and other methods to maintain the population at desired levels. However, continued management of temperate-nesting geese requires knowledge of the population's demographics and current range to help establish quantifiable management goals.

To assess the need and effect of changing hunting regulations, survival and recovery rates and abundance were estimated for this population. Annual survival rates of temperate-nesting Canada geese banded and recovered in Arkansas from 2005 to 2011 were estimated using the Burnham joint live-dead recovery …

Abstracts From Proceedings Of The Twelfth North American Crane Workshop, 13-16 March 2011, Grand Island, Nebraska, Usa. (2014)

Proceedings of the North American Crane Workshop

ASSESSMENT OF THE EASTERN POPULATION GREATER SANDHILL CRANE FALL SURVEY, 1979-2009 Courtney Amundson, Douglas Johnson, Sean Kelly, and Tom Cooper 80

FACTORS INFLUENCING GREATER SANDHILL CRANE NEST SUCCESS IN NEVADA .Chad August, James Sedinger, and Chris Nicolai 80

INFLUENCE OF FOOD AND PREDATOR ABUNDANCE ON STRESS LEVELS OF SANDHILL CRANES WINTERING IN NORTHERN MEXICO Ingrid Barcelo and Felipe Chavez-Ramirez 81

A SUSTAINABLE SOLUTION FOR CROP DAMAGE BY CRANES AND OTHER BIRD SPECIES TO PLANTED SEED Jeb Barzen and Anne Lacy 81

MODELLING THE EFFECT OF LANDSCAPE AND ENVIRONMENTAL FACTORS ON SANDHILL CRANE DISTRIBUTION IN THE CENTRAL PLATTE RIVER VALLEY OF …

The History And Reintroduction Of Whooping Cranes At White Lake Wetlands Conservation Area, Louisiana, Gay M. Gomez

Proceedings of the North American Crane Workshop

On 16 February 2011, whooping cranes (Grus americana) were reintroduced in the wetlands of southwest Louisiana, after an absence of 61 years. This brief communication provides background on the historical presence of whooping cranes in this region, describes the long road to reintroduction, presents observations from the reintroduction’s first day, and offers thoughts on its future prospects.

On 15 May 1939, biologist John J. Lynch of the U.S. Fish and Wildlife Service observed 13 whooping cranes in the remote freshwater marsh north of White Lake in Vermilion Parish, Louisiana. He not only confirmed what local residents and trappers had long …

Proceedings Of The Twelfth North American Crane Workshop, David A. Aborn, Richard Urbanek

Proceedings of the North American Crane Workshop

CONTENTS

PREFACE iii

RESEARCH PAPERS

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, and Joseph P. Fleskes 1

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, and Joseph P. Fleskes 12

EFFECTS OF WIND FARMS ON SANDHILL CRANE PLAYA OCCUPANCY ON THE TEXAS HIGH PLAINS - Laura Navarrete and Kerry L. Griffis-Kyle 20

EVALUATION OF …