When hunters register their deer, information is collected on the date and place of harvest and the sex of the deer. The proportion of the adult buck population taken by hunters is relatively uniform from one year to the next. Under such stable conditions, managers have found that buck harvest trends closely track deer population trends. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.