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Documents the current distribution and changes in status for over two hundred bird species in Ohio, based on surveys across the state from 2006 to 2011.
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.
This milestone book is the first comprehensive survey of the geographical distribution of West Virginia's many breeding birds. More than three hundred volunteer birders systematically combed the Mountain State's forests, wetlands, mountains, and farmlands over a six-year period to collect the data that forms its basis. Detailed range maps are provided for 171 species of birds and two hybrids. Each map is accompanied by a summary of the bird's breeding range, population trends from the USFWS Breeding Bird Survey, and a discussion of factors affecting the Atlas results. Acetate map overlays allow the reader to compare bird distribution with geographical and ecological features of the state.