RMGC is licensed by the IDNR to perform nest and egg depredation where wild nesting geese are aggressive and a nuisance. The Illinois Department of Natural Resources has made this process much easier begining in 2018. We no longer need to apply for a site permit to treat nests and eggs. This means we can be on your property the same day. Please contact us by February in preparation for March/April goose egg addling OR as soon as geese nest on your property.
Egg addling is the term used for rendering goose eggs non-viable. This prevents goslings from hatching. Egg addling has a significant effect in reducing the resident Canada goose population. Not only are the year’s hatchlings reduced, but when goslings mature they tend to nest in the same area, adding their offspring to the local population. After one to two failed nesting seasons, mother goose is apt to move her nest to a different area next year.
METHODS and STEPS to FOLLOW
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EGG ADDLING STEPS
1.) Obtain permit
Contact the Illinois Department of Natural Resources for a permit. This is a must do and absolutely needed if you do not hold a Class B Nuisance Wildlife Permit. If a property owner chooses to perform goose egg depredation services on their own, those involved must be licensed and an IDNR permit IS required.
2.) Locate Nests
Geese build nest in a variety of places. Normally they are close to water and on islands. However, we have seen nests built in planters, in parking lots, on roofs and on balconies. Some of these in crowded shopping malls. Depending on your area, we will walk along shore lines, paddle kayaks, climb up on roofs to look for nests. Once they are found we will mark them, usually with a small flag, and record them on a site map. We will do this with two handlers and sometimes a dog due to the aggressiveness of the nesting pair of geese during the spring season. Momma goose must be chased off the nest.
Geese will nest in strange places. Elevated planters near water are favorites.
3.)ADDLING THE EGGS
When nests with eggs are located, a float test must be performed on the eggs to assess development. If eggs are in the earlier stages and do not float, they are coated with 100% food grade corn oil to prevent oxygen from reaching the embryo, rendering the eggs non-viable. They are put back into the nest so the mother goose continues to incubate her clutch. If eggs are developed and can float, they cannot be humanely addled. They are replaced into the nest and left to develop. This is why you must take action as soon as geese start to nest.
If the oiled eggs are not replaced and the goose is still fertile, she may re-lay her eggs. Once the incubation period has past, the eggs are removed and buried off site.
The nest is then destroyed and removed. This normally encourages geese to leave the site and not return.
Corn oil used for addling Eggs that do not float get oiled Oiled eggs returned to nest
4.) REPORTING AND DOCUMENTING
For each site visit, RMGC will record the location of nests, number of eggs addled and plot the data on to a site map. This information is then used for annual reporting to the Illinois Department of Natural Resources. If you choose to do it yourself the same procedure must be followed.