Subscribe | UPI Odd Newsletter Subscribe WALNUT CREEK, Calif., April 11 (UPI) -- California park rangers said they are combing parks for Canada goose eggs they dip in oil as a form of avian birth control to keep the population in check. The East Bay Regional Park District said workers have been searching parks and other areas in Alameda and Contra Costa counties for Canada goose eggs to put them through a process known as addling, which involves suffocating the eggs in oil and returning them to their nests so mother geese will continue to care for them instead of laying new eggs, the Contra Costa Times, Walnut Creek, Calif., reported Monday. Advertisement Wildlife managers with the district said addling is an imperfect solution, as geese continue to fly in from other areas, but it is the most humane way to deal with the Canada goose population. The birds are known to overwhelm areas with their droppings. "It's a form of birth control for geese," park ranger Rick Reed said. "We get a lot of visitor complaints about goose droppings in our parks. If we did nothing, it would get worse."
