Documents declassified about the CIA's Project Aquiline, which sought to develop a small, stealthy drone that resembled a bird in flight, ended up being stored at Area 51 after the project was cancelled. Like so many other aerospace projects that were kept from the public eye, the Aquiline drones could very well still be kept at the secretive Nevada base collecting dust in a storage facility or even buried in the dirt.
According to the CIA's paper trail, Aquiline was intended for “multi-sensor collection and advanced emplacement capability for collection of intelligence” and to “enable an almost completely surreptitious penetration” into unfriendly skies. Aquiline's designers attempted to mimic the characteristics of a bird in order to allow it to remain as undetectable as possible, a feature that can clearly be seen in some of the drone's prototypes. While the project was terminated before it ever reached operational status, the Aquiline documentation released by the CIA shows that after it ended, all Project Aquiline assets were stored at Area 51 "semi-permanently." It's unknown what became of them after that.
To read more, click here.