Don't wanna disrupt your thinking, thinking process, but there's no way a goose could scare away a coon or any predator, except maybe a hawk, like Lydia said. They can sound the alarm for larger predators, but sometimes they are afraid and simply stay quiet. Even my chickens have been that afraid at times. As for a goose eating a lot, actually their diet is between 80 and 90% greenery. Individually, my geese eat far less grain than my chickens. As for the larger, messier poops, they are mostly water and grass and dry up and blow away in less than a day, usually. Geese are far more ecconomical and much less messy than ducks, in my experience. I gotta tell ya that after having both ducks and geese, my prefference is geese...........Pop