The incident is the first time a predator has broken into the exhibit in its 50 year historyA wild fox snuck into the outdoor flamingo habitat at the Smithsonian’s National Zoo and Conservation Biology Institute on Sunday night and killed 25 of its American flamingos—about a third of the 74-bird flock, per a zoo statement. A Northern pintail duck was also found dead, and three additional flamingos were injured. “This is a heartbreaking loss for us and everyone who cares about our animals,” Brandie Smith, director of the zoo, says in the statement. “The barrier we used passed inspection and...