Other experiments followed to test the birds' psychological fitness for battle. Target pistols were fired only a few inches from a bird's head. The pigeons didn't miss a peck, didn't even look up. Other extremely loud noises were introduced. Again, the pigeons stayed at their task. Skinner also put the pigeons in a pressure chamber, setting the altitude at 10,000 feet. They were also whirled around in a centrifuge, put on pure oxygen and exposed to bright flashes, simulating shell bursts. High vibrations were also introduced, and the birds were subjected to massive G forces without harmful effects. HS-293 Following the success of those experiments, pigeons were placed in three, five and seven tandem positions in a missile to see whether, if one or more birds became obstinate or lazy, the majority could override any incorrect signals and keep the missile on course. The final test was to see whether a male pigeon placed alongside a female would abandon his task or vice versa. Once more, the birds' dedication to the mission was paramount. They pecked away at the target; hunger overcame any other desires. Skinner also learned that pigeons were seemingly fearless when feeding on hemp seed. They worked faster when it was used in place of the standard grain. When sufficient data had been collected on the pigeons, it was sent to Washington for evaluation. Time passed, and Skinner was invited to OSRD to plead his case before a group of scientists. He brought a jacketed pigeon with him in a box, facing a translucent screen on which a target could be projected from across the room. He described what happened: The pigeon had been in its jacket for 36 hours, and we had checked the box into and out of the baggage window at Chicago and had carried it with us on two long train rides. If the image on the screen was to be clear, the box would have to be closed, and I had installed a tube through which the pigeon could be watched without admitting too much light, but it would take too long to look down a tube, one person at a time, and I was asked to open the box. That meant that the pigeon saw a very faint image. Nevertheless, it performed beautifully, pecking steadily as we moved the target about. Someone put his hand in the beam from the projector and the pigeon stopped quickly. It started again just as quickly when the hand was withdrawn. There could scarcely have been a better demonstration of the extraordinary predictability of behavior, the keenness of a pigeon's vision, the accuracy of its responses, and its freedom from distraction.  However, on October 8, 1944, Skinner and his associates were told that "further prosecution of this project would seriously delay others which in the minds of the Division have more immediate promise of combat application." Skinner, like Adams, was disappointed after so much effort had gone into his project. He commented in one of his books that if they meant other guided missile projects had more potential, "the United States had not only no way of guiding a missile but no missile worth guiding. The Germans were far ahead. In September 1943, long before our final meeting in Washington, they had used missiles controlled by radio from mother planes to wreak havoc on the American fleet landing soldiers at Salerno." Skinner kept his pigeons at home and used the box he had taken to Washington to see if they would retain what they had learned. He tested them at six months, a year, two, four and six years later. All of them accurately struck the target, which enabled him to conclude his work had been worthwhile. While his pigeons were never tested in combat, he was confident they could have carried out their missions. In the years following World War II, the U.S. Navy became more interested in missiles and their use against surface ships. The reports on Project Pigeon remained classified, but they were unearthed from the Navy files in 1948 and given new life under the designation Project Orcon (for organic control). The Naval Research Laboratory was tasked with "conducting a program of research to determine the feasibility of using pigeons as the sensing element for controlling missiles." Tests were conducted over the next five years, using a sophisticated trainer that simulated a missile. The pigeon suspended inside faced a screen on which color photos of actual ships were projected. A metal contact was attached to its beak, and a flexible wire from it linked the bird to the missile.  SWOD MK 7 Pelican A gridless screen made of electrically conducting glass tracked where the pigeon had pecked it. The servo-motors then steered the missile to a target ship, and the bird was rewarded with the usual kernels of corn. Repeated performances showed that the pigeons could guide missiles -- well enough under ideal conditions to score hits, although clouds, waves and shadows could throw them off course. Project Orcon was canceled in 1953, when electronic guidance systems for missiles were deemed reliable. The Orcon test results, however, were kept under wraps for six more years before they were declassified. Meanwhile, there was an important spinoff from the research. The electrical conducting glass developed for the pigeon training became a key feature in the combat control centers of U.S. warships. It was employed by plotters using magnetic probes to trace the course of attacking aircraft. Although bats and pigeons were never used to bomb enemy targets, the test results show that they could have. It is interesting to speculate what the results might have been if they had actually gone to war. |
