There is a family of hawks who regularly visit the back deck of my neighbor, because they leave strips of meat out for them. They will in fact peck on the back sliding glass door if the meat is not there.
These eagles are not there because they like to play with the cats. They have probably been trained (fed).
There was a hawk watching me hit golf balls out in a field. He finally swooped down and grabbed one and flew back up in a tree. I walked over calmly to see if he still had it. I said, drop it, and he did. End of lame story. I think they are smart.