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Interspersion of original prairie and timber in Iowa
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Report on a Game Survey of the North Central States, 1931 (Classic Reprint)
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abundance acres Agric Agricultural Belt appears average birds Bldg bobwhite breeding census cent Chart Clyde Terrell conservation corn cottontail County cover covey covies crop crows cycle cyclic Dane County decline deer density density classes Dept Door County ducks estimated evidence fall farmer feeding fluctuations forestry game farms game management game survey Game Warden grays grazing hedges Hungarians hunters hunting Illinois Indiana indicated Iowa irruptions killed Lake land localities Michigan miles Minnesota Missouri mortality nesting north central region northern observers occur Ohio Ornithologist Ozark pheasants pinnated pinnated grouse plantings populations possible prairie chickens predators present probably quail rabbits range ratio records red fox refuges Ripley County River riverbreak roost ruffed grouse saturation point Sauk County says sharptail snow snowshoe soils southern species Sportsman Table timber tion turkey waterfowl weather wild Wiscon Wisconsin woodlot woods zone