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A SUMMARY REPORT ON SURVEYS OF WINTER BIRDS IN THREE STATE PARKS IN SOUTH-CENTRAL INDIANA, TURKEY RUN, MC CORMICK'S CREEK, AND SPRING MILL STATE PARKS 1966-1981
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A SUMMARY REPORT ON SURVEYS OF WINTER BIRDS IN THREE STATE PARKS IN SOUTH-CENTRAL INDIANA, TURKEY RUN, MC CORMICK'S CREEK, AND SPRING MILL STATE PARKS 1966-1981
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A SUMMARY REPORT ON SURVEYS OF WINTER BIRDS IN THREE STATE PARKS IN SOUTH-CENTRAL INDIANA, TURKEY RUN, MC CORMICK'S CREEK, AND SPRING MILL STATE PARKS 1966-1981
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Journal Article
A SUMMARY REPORT ON SURVEYS OF WINTER BIRDS IN THREE STATE PARKS IN SOUTH-CENTRAL INDIANA, TURKEY RUN, MC CORMICK'S CREEK, AND SPRING MILL STATE PARKS 1966-1981
1983
Overview
A grid of approximately seven miles of transects was established in three Indiana State Parks on which to record winter small bird populations in late December and early January. Repeat surveys were made in March to measure the effect of winter severity on species population levels. Data from 1966 to 1981 is summarized and analyzed. Species effected by severe winters included the Carolina Wren, Bluebird, Golden-crowned Kinglet, Winter Wren, Mockingbird, Tufted Titmouse, Towhee, and Downy Woodpecker. Certain species were found to be effected by the quantity of the winter mast crop (acorns and beechnuts). These were the Red-headed Woodpecker, Blue Jay, Red-bellied Woodpecker, White-breasted Nuthatch, and Tufted Titmouse. Statistical comparisons of selected species are made between parks with the Pearson Product Moment Correlation after computerizing the data. High correlations (.67) were evident especially between the Red-headed Woodpecker and the Blue Jay. Statistical comparisons were also made between mast feeders and the Indiana Division of Fish and Wildlife mast rating surveys. There were high correlations (.66) between the Blue Jay and Red-headed Woodpecker and the reported regional mast crops.
