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The Breeding Bird Survey 1966
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Book Synopsis The Breeding Bird Survey, 1966 by : Chandler S. Robbins
Download or read book The Breeding Bird Survey, 1966 written by Chandler S. Robbins and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Routes are selected at random on the basis of one-degree blocks of latitude and longitude. Each 24.5 mile route, with 3 minute stopes spaced one-half mile apart, is driven by automobile. All birds heard or seen at the stops are recorded on special forms and the data are then transferred to machine punch cards.
Book Synopsis Breeding Bird Survey, 1966 by : Chandler S. Robbins
Download or read book Breeding Bird Survey, 1966 written by Chandler S. Robbins and published by . This book was released on 1969 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis North American Breeding Bird Survey by : Sam Droege
Download or read book North American Breeding Bird Survey written by Sam Droege and published by . This book was released on 1989 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarizes population changes of 222 bird species reported on >50 permanent breeding bird survey routes during 1987 and 1988. Compares with annual trends between 1966-87. Includes maps and statistical tables.
Book Synopsis The Breeding Bird Survey 1967 and 1968 by : Chandler S. Robbins
Download or read book The Breeding Bird Survey 1967 and 1968 written by Chandler S. Robbins and published by . This book was released on 1969 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Canadian Breeding Bird Survey, 1966-1994 by : C. M. Downes
Download or read book The Canadian Breeding Bird Survey, 1966-1994 written by C. M. Downes and published by Canadian Wildlife Service. This book was released on 1996 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Breeding Bird Survey in Canada 1966-1983 : Analysis of Trends in Breeding Bird Populations by : B. T. Collins
Download or read book The Breeding Bird Survey in Canada 1966-1983 : Analysis of Trends in Breeding Bird Populations written by B. T. Collins and published by . This book was released on 1989 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resource Publication written by and published by . This book was released on 1982 with total page 262 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 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mourning Dove Status Report, 1973 by :
Download or read book Mourning Dove Status Report, 1973 written by and published by . This book was released on 1967 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Research Publications of the U.S. Bureau of Sport Fisheries and Wildlife, 1928-72 by : Paul Henry Eschmeyer
Download or read book Bibliography of Research Publications of the U.S. Bureau of Sport Fisheries and Wildlife, 1928-72 written by Paul Henry Eschmeyer and published by . This book was released on 1974 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Research Publications, 1928-72 by : Paul H. Eschmeyer
Download or read book Bibliography of Research Publications, 1928-72 written by Paul H. Eschmeyer and published by . This book was released on 1974 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Resource Publication (United States. Bureau of Sport Fisheries and Wildlife) by :
Download or read book Resource Publication (United States. Bureau of Sport Fisheries and Wildlife) written by and published by . This book was released on 1965 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Ecology of the Mallard by :
Download or read book Population Ecology of the Mallard written by and published by . This book was released on 1972 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Woodcock Status Report, 1965 by : William H. Goudy
Download or read book Woodcock Status Report, 1965 written by William H. Goudy and published by . This book was released on 1966 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Singing-ground surveys of the American woodcock indicate that breeding populations have increased gradually over the past 7 years while production, as indicated by wing-collection surveys, has remained relatively stable. The woodcock harvest, meanwhile, has probably more than doubled during the past decade. This suggests that while woodcock are probably becoming more important to North American sportsmen, hunting mortality is still relatively unimportant.
Book Synopsis Wildlife Research Problems, Programs, Progress ... by :
Download or read book Wildlife Research Problems, Programs, Progress ... written by and published by . This book was released on 1969 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Status and Trends of the Nation's Biological Resources by : Catherine E. Puckett Haecker
Download or read book Status and Trends of the Nation's Biological Resources written by Catherine E. Puckett Haecker and published by . This book was released on 1998 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
