So, they rip up and eat the grass, pooping there and in the water, fueling the growth of algae, sucking the oxygen out of the water and killing the fish.Click to see full answer. Also asked, do geese eat poop?The geese that force people to keep their eyes on the ground and dance around little cylinders of poop are called resident geese. They eat grass voraciously, and each adult can produce a pound or more of feces per day, Curtis said. how much does a goose poop a day? An adult Canada goose poops about 2 pounds, per bird, per day. Also to know is, is goose poop good fertilizer? Goose manure is about 77% water and has a fertilizing value of about 2-4-2 when dried. Of course, goose poop is a bit too strong to apply directly to your plants, but you can either add it to your compost pile for a dose of nitrogen or mix with mulch for a spring boost around perennials.Do Geese poop in the water?When geese defecate near shore or in the water they create a health risk to humans. Their fecal material may contain the swimmers itch organism along with fecal bacteria. You should avoid contact and ingestion of water in areas frequented by geese.