They are as far north as Jasper/Pulaski F&W area and the Kankakee river and its ditches... I tracked one in the snow several years back while hunting coyotes on JP .... I thought it was cool to see its tracks and its slide marks as it progressed along its travels until it went into a ditch and I lost it....I 'prolly followed it a good 3/4 mile or so....I wished I saw it visually