Hilariously, during WW2 there was also a research project to build guided missiles using pigeons in the nose cone. "The nose cone of the missile would be split into three compartments, with a lens projecting an image of the intended target onto a screen at the front. A pigeon in each compartment, trained by operant conditioning to recognise the target, would peck at it continually."

https://www.military-history.org/feature/pigeon-guided-missi...