The Great Night Heron Mystery
Each summer, Smithsonian's National Zoo is flooded with calls from visitors reporting large, brown birds on the loose. What they don't know is these supposed fugitives, black-crowned night-herons, are visitors just like them. The elusive winged tourists have flocked to the zoo for over 100 years, breeding on its grounds and stealing its food for six months at a time. Then, they vanish. Now, join the zoo's caretakers as they attempt to track the mysterious herons' migratory patterns, a crucial step in better understanding these secretive birds.