Because of overdevelopment in our area, not only have we had Canadian Geese hanging around our yard, but deer, mallards, turkeys and coyote as well. My neighbor's dog was even eaten by a coyote, and my neighbor had to get rabies shots because she touched her dog's corpse. I've never fed them, but they obviously have found something in my backyard that they like.
In spite of severe controversy, our local town supervisor had a bunch of geese slaughtered, and the meat sent to a shelter for gooseburgers. It seemed quite sensible to me, but something went wrong and the meat had to be thrown away. I don't know if they ever tried it again.