I think a time that my psychology knowledge came to my rescue would be when I got my first pigeon. I hand fed him and every time I fed him, I'd shake the food tray. This conditioned him to associate the shaking noise with food and he eventually became very tamed. I took him outside and flew him. He would fly and then come right back when I shook the can. The video I posted is an example of what the pigeon eventually was able to do (not my pigeon).