From this story in the Des Moines Register:
An Urbandale man clad in camouflage was reportedly hunting squirrels in his backyard Friday morning, Urbandale police said. Officers were dispatched to the 3900 block of 76th Street where John Erickson was reportedly firing a pellet gun at squirrels in a tree on his property. The 23-year-old man did not say why he was shooting them, said Officer Randy Peterson, police spokesman. Erickson did tell police, however, that he had to shoot the critters in the head to kill them, Peterson said. When police arrived, two squirrels were dead on the deck.Erickson, who has a valid hunting license, was cited for discharging a weapon within city limits, a simple misdemeanor.