Colorado’s mule deer population has been shrinking for years and wildlife officials are trying to bring it back up. In 2006, the population numbered 600,000. That dropped by almost half last year. Hunters say they notice the shortage, specifically in northwest Colorado. On Saturday, Colorado Parks and Wildlife will present ideas on how to increase the population at a special summit in Glenwood Springs. Aspen Public Radio’s Marci Krivonen spoke with Jody Kennedy of Parks and Wildlife.