Data from the Colorado Parks and Wildlife show that deer have decreased by 36 percent statewide and 10 percent throughout the West. Biologists say the reasons for the decline include harsh winters, droughts, residential development in the mountains, Chronic Wasting Disease, coyote and mountain lion predation, vehicle collisions, and energy development. In response, Colorado is offering 50,000 less deer hunting licenses than it did in 2007. "We've had a significant decline that is not satisfactory to us and to the public," said Chad Bishop, CPW assistant director for wildlife natural resources. "We're going to work collaboratively with all of our constituents to increase mule deer numbers as best as we can. ... If our deer continue to decline, it will hurt us financially."