Anti Brood Parasite Defenses And Nest Site Selection By Forest Edge Songbirds In Central Missouri
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Anti Brood Parasite Defenses And Nest Site Selection By Forest Edge Songbirds In Central Missouri
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Author : Dirk E. Burhans
language : en
Publisher:
Release Date : 1996
Anti Brood Parasite Defenses And Nest Site Selection By Forest Edge Songbirds In Central Missouri written by Dirk E. Burhans and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Brood parasites categories.
Brood parasites such as cowbirds exert strong selective forces upon hosts to coevolve defenses to counter the costs imposed by raising parasitic young. These defenses may occur on the behavioral level or may be related to the way in which hosts select their nest sites. I examined the way in which nest-site selection and host defenses are related to brood parasitism by the Brown-headed Cowbird (Molothrus ater) and nest predation in central Missouri for Field Sparrow (Spizella pusilla) and Indigo Bunting (Passerina cyanea). By comparing the similarities and differences in nest-site selection and parasitism dynamics between Field Sparrows and Indigo Buntings I hope to shed light on the patterns and processes involved in nest-site selection and anti-brood parasite defenses. Indigo Buntings and Field Sparrows were parasitized at very different frequencies despite their similarities in nesting biology. Parasitism frequency in both species was best explained by average side nest concealment except for Indigo Buntings nesting under forest canopy. Buntings nesting under forest canopy were more heavily parasitized, indicating that habitat-scale considerations may override microhabitat features in explaining parasitism. Nest predation and daily nest survival in Field Sparrows and Indigo Buntings showed opposing patterns seasonally and by nesting stage. Microhabitat variables explained predation frequencies in Field Sparrows, but not Indigo Buntings. Aggressive defense at the nest did not explain differences in parasitism frequency between Indigo Buntings and Field Sparrows based on experiments with models. Field Sparrows frequently deserted cowbird-parasitized nests, and morning nest arrival observations suggested that they often encounter cowbirds parasitizing their nests. Experiments indicated that Field Sparrows may not recognize cowbirds as brood parasites, but as predators; however, nest desertion may be a response that is appropriate for both parasitism and nest predation, because predators may return to take the entire nest contents.
Nest Predation And Brood Parasitism Of Passerine Birds In Pinyon Juniper Woodland In Northeast New Mexico
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Author : David R. Curson
language : en
Publisher:
Release Date : 1996
Nest Predation And Brood Parasitism Of Passerine Birds In Pinyon Juniper Woodland In Northeast New Mexico written by David R. Curson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
American Doctoral Dissertations
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Author :
language : en
Publisher:
Release Date : 1996
American Doctoral Dissertations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Dissertation abstracts categories.
The Condor
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Author :
language : en
Publisher:
Release Date :
The Condor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Birds categories.
Current Ornithology Volume 17
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Author : Charles F. Thompson
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-09-09
Current Ornithology Volume 17 written by Charles F. Thompson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-09-09 with Science categories.
Current Ornithology publishes authoritative, up-to-date, scholarly reviews of topics selected from the full range of current research in avian biology. Topics cover the spectrum from the molecular level of organization to population biology and community ecology. The series seeks especially to review (1) fields in which an abundant recent literature will benefit from synthesis and organization, or (2) newly emerging fields that are gaining recognition as the result of recent discoveries or shifts in perspective, or (3) fields in which students of vertebrates may benefit from comparisons of birds with other classes. All chapters are invited, and authors are chosen for their leadership in the subjects under review.
Life After Logging
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Author : E. Meijaard
language : en
Publisher: CIFOR
Release Date : 2005-01-01
Life After Logging written by E. Meijaard and has been published by CIFOR this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-01-01 with Animals categories.
This book presents a technical review of ecological and life history information on a range of Bornean wildlife species, aimed at identifying what makes these species sensitive to timber harvesting practices and associated impacts. It addresses three audiences: 1) those involved in assessing and regulating timber harvesting activities in Southeast Asia, 2) those involved in trying to achieve conservation goals in the region, and 3) those undertaking research to improve multipurpose forest management. This book shows that forest management can be improved in many simple ways to allow timber extraction and wildlife conservation to be more compatible than under current practices. The recommendations can also be valuable to the many governmental and non-governmental organisations promoting sustainable forest management and eco-labelling. Finally, it identifies a number of shortcomings and gaps in knowledge, which the hope can interest the scientific community and promote further research. This review is, an important scientific step toward understanding and improving sustainable forestry practices for long-term biodiversity conservation. Even in the short term, however, significant improvements can be made to improve both conservation and the efficiency of forest management, and there is no need to delay action due to a perceived lack of information. In the longer term it is expected that the recommendations from this review will be implemented, and that further research will continue to help foster an acceptable balance among the choices needed to maintain healthy wildlife populations and biodiversity in a productive forest estate.
Ecology And Management Of Cowbirds And Their Hosts
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Author : James N. M. Smith
language : en
Publisher: University of Texas Press
Release Date : 2000
Ecology And Management Of Cowbirds And Their Hosts written by James N. M. Smith and has been published by University of Texas Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Science categories.
In the past two centuries, cowbirds have increased in numbers and extended their range across North America, while many of the native songbird species whose nests they parasitize to raise their young have declined. This timely book collects forty essays by most of the principal authorities on the biology and management of cowbirds. The book's goals are to explore the biology of cowbirds, the threats they pose to host species and populations, and the management programs that are being undertaken to minimize these threats. The book is organized into five sections, each with an extended editors' introduction that places the contributions in a broad, up-to-date setting. The sections cover: ? The changing abundance of cowbirds and the ways in which their numbers can be estimated. ? Host choice by cowbirds, the negative effects of cowbirds on particular host species, and the daily patterns of cowbird behavior. ? Behavioral interactions between cowbirds and specific host species. ? Patterns of cowbird abundance and host use across varying landscapes. ? Management programs designed to control cowbirds and protect threatened songbirds. James N. M. Smith teaches at the University of British Columbia in Vancouver. Terry L. Cook works for the Nature Conservancy in Seattle. Stephen I. Rothstein teaches at the University of California, Santa Barbara. Scott K. Robinson holds joint appointments at the Illinois Natural History Survey and the University of Illinois, Champaign. Spencer G. Sealy teaches at the University of Manitoba.
Evolutionary Ecology Of Birds
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Author : Head of Biodiversity and Macroecology and Senior Research Fellow Peter M Bennett
language : en
Publisher: Oxford University Press on Demand
Release Date : 2002
Evolutionary Ecology Of Birds written by Head of Biodiversity and Macroecology and Senior Research Fellow Peter M Bennett and has been published by Oxford University Press on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Nature categories.
Birds show bewildering diversity in their life histories, mating systems and risk of extinction. Why do albatrosses delay reproduction for the first 12 years of their life while zebra finches breed in their first year ? Why are fairy-wrens so sexually promiscuous while swans show lifelongmonogamy? Why are over a quarter of parrot species threatened with global extinction while woodpeckers and cuckoos remain secure? Some of these topics, such as delayed onset of breeding in seabirds, are classic problems in evolutionary ecology, while others have arisen in the last decade, such as genetic mating systems and extinction. Birds offer a unique opportunity for investigating these questions because they areexceptionally well-studied in the wild. By employing phylogenetic comparative methods and a database of up to 3,000 species, the authors identify the ecological and evolutionary basis of many of these intriguing questions. They also highlight remaining puzzles and identify a series of challenges forfuture investigation. This is the most comprehensive reappraisal of avian diversity since David Lack's classic "Ecological Adaptations for Breeding in Birds". It is also the most extensive application of modern comparative methods yet undertaken. This novel approach demonstrates how an evolutionary perspective canreveal the general ecological processes that underpin contemporary avian diversity on a global scale.
The Eastern Screech Owl
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Author : Frederick R. Gehlbach
language : en
Publisher: Texas A&M University Press
Release Date : 2008
The Eastern Screech Owl written by Frederick R. Gehlbach and has been published by Texas A&M University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Nature categories.
The eastern screech owl, widespread over the eastern half of North America and noticeably tolerant of human activity, is one of America's most familiar birds. Residing naturally in wooded environs with tree cavities, this owl lives well in suburbia and can be found nesting in mailboxes, porch columns, and purple martin houses. Based on a twenty-five-year study, biologist Frederick R. Gehlbach tells the life story of the eastern screech owl, focusing on case studies of suburban and rural study plots in Central Texas. This is the first thorough study of major life-history, behavioral, and ecological features of the species. Indeed, it is the first concurrent, comparative study of an urban and a rural population of any New World animal. Told in a personal voice, the story of these birds will interest all who have not lost touch with their ancestral world. However, Gehlbach has also included quantitative data and analysis of interest to ecologists, wildlife biologists, and ornithologists. Photographs (including color shots of the gray and rufous phases), figures, and tables provide further detail. Gehlbach's investigations have been those of not only an academic ecologist, but a suburbanite curious about his natural surroundings. The result is a model of research on species population dynamics and adaptation, yielding an emerging picture of what the eastern screech owl needs for successful coexistence with human neighbors.
Birds As Monitors Of Environmental Change
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Author : R.W. Furness
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-04-17
Birds As Monitors Of Environmental Change written by R.W. Furness and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-17 with Science categories.
Birds as Monitors of Environmental Change looks at how bird populations are affected by pollutants, water quality, and other physical changes and how this scientific knowledge can help in predicting the effects of pollutants and other physical changes in the environment.