Scientists turned dead birds into drones that can fly.

Researchers turned stuffed birds into robots. Bird-shaped robots can observe humans and other animals. Stuffed animals are quite easy to turn into robots. Things like deer's skin can also use to cover the robot. And that skin or fur can dress on a four-leg robot. Stuffed fish and stuffed snakes can also use as robots. 

But as I wrote earlier, the dead bird turned to the flying drone. And that thing is one of the most powerful tools in the world. The animal-shaped drones and robots can observe other humans or animals. Researchers can use animals like rats and crows as covers for the surveillance robots. Researchers could use some common animals that have only a few enemies. That makes those robots invisible. 

Those animal-shaped robots can have multiple sensors. They can have microphones, laser microphones, sonar systems, and CCD cameras. They also can carry chemical detectors like plasma spectrometers. So those sensor packs make those robots effective. 

The animal-shaped robots can also use as attack tools. In the feet of those robots can install electric batons. And they can be used in capture operations. They can carry explosives, small pistols, and chemical weapons that are in those robots' mouths. That kind of system can use in covert operations. 

https://futurism.com/the-byte/dead-birds-drones-that-fly

https://www.wired.com/video/watch/the-taxidermy-bird-that-scientists-turned-into-a-robot