ARLINGTON – Patient No. 1938 at the Sarvey Wildlife Care Center is a great horned owl. Her injuries are such that she can’t stand up. She rests silently in one of the cages built into a wall, the front covered by a blanket so she doesn’t get stressed. The center takes in about 2,000 animals a year — half of them birds that range from owls to mallard ducks, the other half mammals that include weasels and coyote pups.