A Canada goose puts out about 3.5 pounds of goose poop per day.
Several years ago, when I lived on Cape Cod, I played golf on one of the most expensive courses on the Cape. Two or three of the greens were unplayable because of the poop.
One of my friends there was an extreme environmentalist and a sailer. He continually bitched about having to save his poop in his boat and get it pumped out at a pump-out station, while the geese and ducks were pooping all over the place.
I laughed because I saw him slowly getting religion.