Marie writes: Okay, this is just plain cool. This is clearly someone using their brain, in combination with "what the hell, let's just go ahead and try it..."
Dr Julius Neubronner's Miniature Pigeon CameraIn 1903, Dr Julius Neubronner patented a miniature pigeon camera activated by a timing mechanism. The invention brought him international notability after he presented it at international expositions in Dresden, Frankfurt and Paris in 1909-1911. Spectators in Dresden could watch the arrival of the camera-equipped carrier pigeons, whereupon the photos were immediately developed and turned into postcards which could be purchased. (click images to enlarge.) - from The Public Domain Review. Visit the site to see even more photos.