The U.S. Fish and Wildlife Service is proposing to enlist shooters to kill more than 500,000 barred owls over the next 30 years in the Pacific Northwest to preserve habitat for northern spotted owls, a protected species. Barred owls are native to the East Coast but since the 1950s have been expanding their range in the Northwest. They are relentless predators who eat anything that moves. They will yank worms from the ground and salamanders out from under rocks. Nail birds on the wing and anything in the water, from fish to snails to crayfish and frogs. Even slugs are on the menu. They are also…