TIL Canada Geese can consume up to 4lbs of grass per day, resulting in about 3lbs of fecal matter daily. The geese themselves weigh approximately 12lbs.
Source: https://www.des.nh.gov/organization/commissioner/pip/factsheets/bb/documents/bb-53.pdf
Source: https://www.des.nh.gov/organization/commissioner/pip/factsheets/bb/documents/bb-53.pdf