"The pigeons — Skinner had determined that they worked best as a trio — would be placed in the nose cone of a missile, which was dubbed the 'Pelican.' Each pigeon would be looking at a small electronic screen that would display the ground ahead of the missile. As the pigeons would peck away at the target, small pulleys attached to their heads would steer the missile. Unfortunately for the pigeons, they would be along for the ride up until the moment of impact."
https://taskandpurpose.com/history/project-pigeon-missiles-ww2