PETERSON AIR FORCE BASE, Colo. – Doug Eckberg, United States Department of Agriculture Animal and Plant Health Inspection Service wildlife biologist, feeds and gives water to the pigeon being used to attract its predator in a raptor trap at Peterson Air Force Base, Colorado, June 4, 2018. Predatory birds like hawks and falcons may see the pigeon and become trapped in an attempt to catch it. (U.S. Air Force photo by Audrey Jensen)