Treating Goose Eggs to Stop Hatching

Resident Canada Goose

The Resident Canada Goose Nest and Egg Depredation Order helps individuals, local governments, businesses, and others manage waterfowl to achieve an optimal balance between the positive value and conflicts that these birds may present.

Once you have your state permit for Canada geese egg depredation (see previous post), you can begin the process of treating the eggs. The process requires the application of appropriate nonlethal methods to minimize the extent to which eggs must be destroyed.

There are three accepted methods of treating eggs.

1. Oiling—Use 100 percent food-grade corn oil. The oil blocks the pores in the egg’s shell, and prevents further development of the contents. Some States require a pesticide license to use this method, so check State regulations before proceeding. Many people find this the most convenient method.
2. Puncturing—To puncture the egg, hold it securely in your hand, braced against the ground. Insert a long, thin metal probe into the pointed end of the egg. Best results are attained by placing slow steady pressure. Once the probe passes through the shell, place its tip against the inside of the shell, and swirl with a circular motion.
3. Shaking/Addling—Shake each egg vigorously until you hear a sloshing sound inside the egg. This technique may prove impractical for large numbers of eggs.
   

Geese generally nest near water with a good view of the area and potential predators. Nests may also be located on peninsulas and islands, in tall grass near mowed areas, and near barriers such as walls or even flat roofs. Goose nests are round or oval, built of vegetation, with four to six eggs.

Once incubation has begun, the goose may be difficult to see. The gander may appear as a lone guard within a few hundred feet of the nest. Seeing a lonegoose is one important sign that a nest is nearby and egg oiling should be started. After locating the nest, approach with an attitude of confidence and control. The geese tend to be less aggressive if a two-person team begins confidently rather than timidly.

All eggs in the nest can be treated at the same time if they are warm to the touch, indicating incubation has begun. Mark each egg with a permanent marker to identify which eggs have been treated. This is necessary if the eggs are cool, which means the goose may lay more eggs and you will need to return to the nest to treat additional eggs.

The adult goose will remain on the nest beyond the expected hatching date, reducing or preventing the potential for re-nesting. It is not necessary to remove the oiled eggs later. The treated eggs don’t harm the goose and the adult geese will simply abandon the nest. Enter your report at the FWS registration Web site by October 31 each year.

The adult geese may return to the area the following year, so keep a record of where you found the nests and go to the same area next year.

For more information contact Ohio Geese Control or the U.S. Department of Agriculture.