Even though in Illinois it's legal for a 14-year-old to hunt alone an adult needs to be supervising. Read this story to see what can happen when youthful exuberance is involved allegedly without adult supervision.
Several other states also have no minimum hunting age. According to the National Conference of State Legislatures, youth hunting licenses are available in Indiana for children under 17 who've passed a hunter safety class.
Kids under 12 in Iowa can be issued a deer or turkey license, but have to be accompanied by a licensed adult hunter. And in Wisconsin, kids between 10 and 17 can hunt, but only with an adult guardian who's also a licensed hunter.
Wisconsin last year lowered the minimum age from 12 to 10, citing the need to get younger kids appreciating nature and maintaining the state's hunting tradition.
Children can't buy guns or ammunition; it takes an adult to arm them with a rifle and ammunition. So too should parents fully appreciate it might not be their child that makes the mistake, but the ones that suffer the consequences of a youthful mistake. The news article in the Daily Herald is a good one.