This is the story of how the Smithsonian Institute became intertwined in a secret biological warfare project. During the 1960s, the Smithsonian Institution undertook a large-scale biological survey of a group of uninhabited tropical islands in the Pacific. It was one of the largest and most sweeping biological survey programs of all time, a six-year-long enterprise during which Smithsonian personnel banded 1.8 million birds, captured live specimens and took blood samples, and catalogued the avian, mammalian, reptile, and plant life of 48 Pacific islands.