Pigeon photography

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"Pigeon photography was an aerial photography technique invented in 1907 by the German apothecary Julius Neubronner, who also used pigeons to deliver medications. A homing pigeon was fitted with an aluminum breast harness to which a lightweight time-delayed miniature camera could be attached. Neubronner's German patent application was initially rejected, but was granted in December 1908 after he produced authenticated photographs taken by his pigeons. He publicized the technique at the 1909 Dresden International Photographic Exhibition, and sold some images as postcards at the Frankfurt International Aviation Exhibition and at the 1910 and 1911 Paris Air Shows. The lack of military or commercial interest in the technology after the First World War led Neubronner to abandon his experiments, but his idea was briefly resurrected in the 1930s by a Swiss clockmaker, and reportedly also by the German and French militaries and the American Central Intelligence Agency (CIA)".

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