Distribution and abundance of pheasants Distribution and abundance of pheasants in Illinois distributionabun47gree Year: 1962 County and adjacent portions of Ford County. Detailed ecological studies on a township-sized study area in this region indicated that pheasants numbered 63, 80, and 88 birds per square mile in January, 1957 and 1958, and February, 1960, respectively. Pheasants declined in numbers in all directions from the nucleus of abundance in Ford and Livingston counties; this decline was most apparent to the southwest. The rural mail carrier counts showed some po]jula- tions of p
Distribution and abundance of pheasants Distribution and abundance of pheasants in Illinois distributionabun47gree Year: 1962 County and adjacent portions of Ford County. Detailed ecological studies on a township-sized study area in this region indicated that pheasants numbered 63, 80, and 88 birds per square mile in January, 1957 and 1958, and February, 1960, respectively. Pheasants declined in numbers in all directions from the nucleus of abundance in Ford and Livingston counties; this decline was most apparent to the southwest. The rural mail carrier counts showed some po]jula- tions of pheasants, usually of low levels, outside the boundaries of the contiguous range, fig. 8. Some of these outlying populations have persisted for many years. One such population, greater in numbers and more per- sistent than other outlying populations, is located in Logan and Tazewell counties. A small population of pheasants has existed in Bond County, about 40 miles east of St. Louis, for many years, and most of the township distribution maps in this report indicate the presence of an isolated population of pheasants where Hancock, Henderson, McDonough, and Warren coun- ties in western Illinois come into close 'I'he extent to which these small, persistent populations arc maintained through periodic releases of pheasants by private individuals or agencies is not known. Some ol the pheasants observed by rural mail carriers in Cum- berland, and probably all of the pheasants reported in Edwards and Wabash counties, which are south of the contiguous range currently occupied by pheasants in MEAN NUMBER OF COCKS KILLED PER SQUARE MILE 1957-1959 â 1 610-100 61 410-60,0 210-400 10-20 0 LESS THAN OR NONE Fig. 16. â Distribution I and abundance of pheasants in Illinois as mapped from data obtained from post- hunting season question- Mains distributed to hunters during the 1957, 1958, and 1959 hunting seasons (aft'T William L. Preno unpub- lished). 15
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