Download or read book A Population Study of Marsh breeding Redwinged Blackbirds Agelaius Phoeniceus with Emphasis on Site Fidelity written by William H. Barnard and published by . This book was released on 1979 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Red winged Blackbird written by Arthur Augustus Allen and published by . This book was released on 1914 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Adaptations of Marsh Nesting Blackbirds MPB 14 Volume 14 written by Gordon H. Orians and published by Princeton University Press. This book was released on 2020-03-31 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The variety of social systems among the New World blackbirds (Family Icteridae) and the structural simplicity of their foraging environment provide excellent opportunities for testing theorics about the adaptive significance of their behavior. Here Gordon Orians presents the results of his many years of research on how blackbirds utilize their marsh environments during the breeding season. These results stem from information he gathered on three species during ten breeding seasons in the Pacific Northwest, on Red-winged blackbirds during two breeding seasons in Costa Rica, and on three species during one breeding season in Argentina. The author uses models derived from Darwin's theory of natural selection to predict the behavior and morphology of individuals as well as the statistical properties of their populations. First he tests models that predict habitat selection, foraging behavior, territoriality, and mate selection. Then he considers some population patterns, especially range of use of environmental resources and overlap among species, that may result from those individual attributes. Professor Orianns concludes with an overview of the structure of bird communities in marshes of the world and the relation of these patterns to overall source availability in these simple but productive habitats.
Download or read book Habitat Structure Polygyny and the Evolution of Upland Nesting in Red winged Blackbirds Agelaius Phoeniceus written by Ronald Allen Howard and published by . This book was released on 1977 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Spatial Habitat Model for the Marsh breeding Red Winged Blackbird Agelaius Phoeniceus in Coastal Lake Erie Wetlands written by Uygar Özesmi and published by . This book was released on 1996 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Red winged Blackbirds written by Les D. Beletsky and published by University of Chicago Press. This book was released on 1996 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on detailed data from their sixteen-year study of red-winged blackbirds in the marshes of Washington's Columbia National Wildlife Refuge, Beletsky and Orians analyze the information redwings use to make breeding-season decisions and the consequences these decisions have for lifetime reproductive success. Because male and female redwings make different, and often independent, decisions—males focus on territory acquisition and maintenance, while females must choose when and where to nest and how much energy to invest in reproduction—the authors have taken the novel approach of studying the sexes separately. Using analyses of observational data combined with field experiments and game-theoretical models, the authors provide new insights into the complex patterns of reproductive decision-making and breeding behavior in redwings. This book will be of interest to all who study social animals, including behavioral ecologists, evolutionary biologists, and ornithologists.
Download or read book Polygyny and Sexual Selection in Red Winged Blackbirds written by William A. Searcy and published by Princeton University Press. This book was released on 2014-07-14 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to explain why red-winged blackbirds are polygynous and to describe the effects of this mating system on other aspects of the biology of the species. Polygyny is a mating system in which individual males form long-term mating relationships with more than one female at a time. The authors show that females choose to mate polygynously because there is little cost to sharing male parental care in this species, and because females gain protection against nest predation by nesting near other females. Polygyny has the effect of intensifying sexual selection on males by increasing the variance in mating success among males. For females, polygyny means that they will often share a male's territory with other females during the breeding season and will thus be forced to adapt to frequent female-female interactions. This work reviews the results of many studies by other researchers, as well as presenting the authors' own results. Studies of red-winged blackbirds have ranged from long-term investigations of reproductive success and demography, to research on genetic parentage based on modern molecular methods, to a variety of experimental manipulations of ecological circumstances and behavior. Since the red-winged blackbird is one of the best studied species of any taxa in terms of its behavior and ecology, the authors have a particularly extensive body of results on which to base their conclusions. Originally published in 1995. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Download or read book Population Trends of Blackbirds and Starlings in North America 1966 76 written by Richard A. Dolbeer and published by . This book was released on 1978 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: We used the North American Breeding Bird Survey to estimate trends of red-winged blackbirds (Agelaius phoeniceus), common grackles (Quiscalus quiscula), brown-headed cowbirds (Molothrus ater), and starlings (Sturnus vulgaris) for 1966-76 in the United States and Canada. Extended to a continental scale, the survey indicated significant increases in the mean number of redwings, cowbirds, and starlings observed per route. Starlings had the greatest increase, 4.96 birds per route or a 19.4% increase. The starlings' greatest regional increases occurred in the western United States. Populations of redwings increased most in the St. Lawrence Valley and parts of the Midwest and Lower Plains regions. Cowbirds increased the most in the plains from Iowa to Saskatchewan and decreased over parts of the eastern and midwestern United States. Grackle populations indicated no change on a continental scale but did show strong increases in the Midwest and Lower Plains regions and declines in Appalachia. This knowledge of blackbird and starling population trends in specific areas should improve our ability to understand increasing bird-man conflicts, to evaluate proposed bird-damage control strategies, and to develop more effective, long-term solutions than are available at present.
Download or read book The Red winged Blackbird written by Les Beletsky and published by . This book was released on 1996 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Red-winged Blackbird is not only one of North America's commonest birds, but also its best studied. It exemplifies the contribution that in-depth species studies can make to many of the central issues in behavioral ecology. In this book, Les Beletsky calls on 20 years experience of redwings to provide an up-to-date, comprehensive summary of all the major work done with these birds. These studies on the redwings' polygynous breeding system, strong territoriality, complex vocal communications, and broad distribution shed light on many themes of key interest to behaviorists and ecologists interested in the evolution of mate choice and species adaptations to habitats which vary in character in different parts of their range. An extra dimension is added in the consideration of redwings as pests, a widespread and often serious problem in crops of rice and corn. This book is written in an easy style, and will serve as an introduction, to both student and layperson, to redwings and what they can teach us of behavioral ecology. The Red-winged Blackbird provides the research worker with a balanced summary and comprehensive bibliography of one of ornithology's widest and deepest studies. Key Features * Covers perhaps the most studied bird in North America * Presents model species for studies in mating systems, habitat selection, vocal communication, and territorial behavior * Includes a comprehensive bibliography * Presented in an accessible style, ideal for student use
Download or read book Population Biology written by John Merritt Emlen and published by MacMillan Publishing Company. This book was released on 1984 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Steroid Hormones and Male Reproductive Behavior in Red winged Blackbirds Agelaius Phoeniceus written by Torgeir Storm Johnsen and published by . This book was released on 1991 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Red winged Blackbird written by Arthur a 1885-1964 Allen and published by Legare Street Press. This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This detailed study of the red-winged blackbird offers insights into the behavior, ecology, and habitat of this iconic bird. Drawing on years of observation and research, author Arthur A. Allen offers a fascinating exploration of the red-winged blackbird and the complex ecosystem of the cat-tail marsh. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book The Red Winged Blackbird written by Arthur Augustus Allen and published by Palala Press. This book was released on 2015-11-15 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book The Red Winged Blackbird written by Arthur A. Allen and published by Forgotten Books. This book was released on 2018-02-05 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Red-Winged Blackbird: A Study in the Ecology of a Cat Tail Marsh The cat-tail marsh, which is here considered, is as peculiar and distinctive as any environment available for study. Great expanses of sedge, rush, and cat-tail conceal an assem blage of birds which are as interesting as they are little known birds that are little known because of the difficulties in their study, that are seldom seen because of their secretive habits, yet withal, birds that are as unique in their adaptations, as varied in their structure and habits, as any other similar group. There are the Rails, the Coot, and the Gallinule constituting an ecological unit in themselves, the Marsh Wren, Swamp Sparrow, and Red-winged Blackbird another, the Least and American Bitterns, and the Pied-billed Grebe still others. All are strictly marsh birds which seem to find their optimum environment in the cat-tail marsh. With some of these birds, adaptation to a marsh life is very evident, but with others, it is quite obscure. The long legs of the Virginia Rail for wading, the long toes for grasping the floating debris and distributing the weight, the long bill for probing, the color, the compressed shape - like that of a flea - for slipping through the dense vegetation, are decided specializations for a life in this peculiar environment. The Swamp Sparrow and the Redwing, on the other hand, show no striking modifications. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1980 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Eastern Redwing Blackbird Agelaius Phoeniceus Phoeniceus in Arkansas Crowley s Ridge State Park with Special Emphasis on Nesting written by Murray G. Sullivan and published by . This book was released on 1967 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Evolution of Differential Migration and the Role of Situational Factors in Social Dominance written by Daniel Aaron Cristol and published by . This book was released on 1993 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
