You've heard of pigeons carrying messages. How about pigeons taking pictures? The CIA invented a small camera that was light enough to attach to pigeons. As the birds flew over a target, the camera would take detailed images of a target area.
This gallery originally appeared on CBSNews.com.
February 22, 2011 12:53 PM PST
Photo by: CIA
| Caption by: Charles Cooper
Conversation powered by Livefyre