and another
http://www.conservation.state.mo.us/conmag/1998/02/60.htm
some highlights
Don't feed geese, at least on purpose. Offering them bread, popcorn or other human foods will only entice them to your lawn and aren't good for the geese. These foods lack balanced nutrients, which goslings need to develop strong wings. Geese with deformed wings can't fly.
Federal guidelines allow people to harass nuisance geese, except when they are incubating eggs. You can't declare all-out war, but you may use the following: fireworks, gas exploders, firearms, pistol-launched whistle bombs, balloons, flags, reflective tape, swan or eagle decoys, spotlights and Canada goose distress tapes.
Don't forget to alert the police and your neighbors, or you may be explaining your tactics to a judge. Another note: If using firearms, make sure it is legal to discharge them within your city limits. Shoot in a safe direction and don't fire directly at the problem birds.
Hunt in season, if the law allows it. Although many urban and residential areas do not allow shooting firearms, some permit bow hunting.
Create physical barriers that obstruct the flightless goslings' path from the shore to the water. A low fence at the water's edge may discourage geese from nesting. A grid of monofilament line placed over a pond can keep geese from landing on the water.
If you try the above methods and the population of geese continues to grow, the federal government may issue you permits to treat eggs in a nest so they won't develop into goslings. This can be done by coating the eggs with oil or by shaking them. Completely removing the eggs doesn't work because the geese most likely will renest.