Endangered ducks from across the world have produced scores of chicks within its 4.6-acre confines this year under its waterfowl breeding program, according to the Wildlife Conservation Society.
The zoo's hatchery — started four years ago — has become increasingly more successful. Zookeepers have hatched chicks from eight rare or endangered species of ducks.
Among these are nine scaly-sided mergansers, endangered sea ducks native to Russia, China and Korea, and the pink-eared duck, native to Australia.
The zoo has 23 different duck species on exhibit as well as the largest public sea duck collection.