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Population Trends Of Blackbirds And Starlings In North America 1966 76
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Book Synopsis Population Trends of Blackbirds and Starlings in North America, 1966-76 by : Richard A. Dolbeer
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.
Book Synopsis The Technical Literature on the American Woodcock, 1927-1978 by : Thomas J. Dwyer
Download or read book The Technical Literature on the American Woodcock, 1927-1978 written by Thomas J. Dwyer and published by . This book was released on 1979 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Special Scientific Report--wildlife by :
Download or read book Special Scientific Report--wildlife written by and published by . This book was released on 1949 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Blackbird and Cowbird by : Denver Wildlife Research Center. Section of Bird Damage Control
Download or read book Blackbird and Cowbird written by Denver Wildlife Research Center. Section of Bird Damage Control and published by . This book was released on 1985 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the Denver Wildlife Research Center on Birds and Bird Damage Control by :
Download or read book Publications of the Denver Wildlife Research Center on Birds and Bird Damage Control written by and published by . This book was released on 1984 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Blackbirds and Corn in Ohio by : Richard A. Dolbeer
Download or read book Blackbirds and Corn in Ohio written by Richard A. Dolbeer and published by . This book was released on 1980 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Research Publication Series of the U.S. Fish and Wildlife Service, 1889-1985 by :
Download or read book Selected Research Publication Series of the U.S. Fish and Wildlife Service, 1889-1985 written by and published by . This book was released on 1987 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: A bibliography comprising annotated citations of 2037 scientific and technical publications from ten series issued by the U.S. Fish and Wildlife Service. Includes a six-page introduction containing a history of the Service and a description of the research and development series.
Book Synopsis Fisheries and Wildlife Research by :
Download or read book Fisheries and Wildlife Research written by and published by . This book was released on 1980 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report on activities in the divisions of research.
Book Synopsis Research and Development Series by :
Download or read book Research and Development Series written by and published by . This book was released on 1987 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and Management of Cowbirds and Their Hosts by : James N. M. Smith
Download or read book Ecology and Management of Cowbirds and Their Hosts written by James N. M. Smith and published by University of Texas Press. This book was released on 2014-09-05 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Resource Publication written by and published by . This book was released on 1977 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conservation of the Amphibia of the United States, a Review by : R. Bruce Bury
Download or read book Conservation of the Amphibia of the United States, a Review written by R. Bruce Bury and published by . This book was released on 1980 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report - United States Fish and Wildlife Service by : U.S. Fish and Wildlife Service
Download or read book Annual Report - United States Fish and Wildlife Service written by U.S. Fish and Wildlife Service and published by . This book was released on 1979 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1979 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Analysis of the Wildlife and Fish Situation in the United States by : Curtis H. Flather
Download or read book An Analysis of the Wildlife and Fish Situation in the United States written by Curtis H. Flather and published by . This book was released on 1989 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report RM. written by and published by . This book was released on 1988 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Iowa Breeding Bird Atlas by : Laura Spess Jackson
Download or read book The Iowa Breeding Bird Atlas written by Laura Spess Jackson and published by University of Iowa Press. This book was released on 1996 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Iowa Breeding Bird Atlas"—the first comprehensive statewide survey of Iowa's breeding birds—provides a detailed record of the composition and distribution of the avifauna of the Hawkeye State. The atlas documents the presence of 199 species, 158 of which were confirmed breeding. This landmark volume will alert Iowans to the limited distribution of numerous species and serve as a guide to the management practices—such as forest and wetland management, set-aside programs, reduction in farm chemical use, and crop diversity—which could help insure that many future changes are positive ones. "The Iowa Breeding Bird Atlas" provides a welcome and much-needed baseline for future comparisons of changes in Iowa's birdlife and, by extension, the lives of all animals in the state.
