Need an attorney
I know there's county-by-county attorney lists/resources and in fact I looked for the Appleton area when this thread first started. The lists are by practice.
I may be wrong but - iirc - the OP had inherited a good chunk of money from his dad. "Retired" very young....so when you don't earn your money the old fashioned way and it came as easily as being born by the "right" parents,it's far easier to spend.
If I were on his place - and I was convinced I was right -I'd be willing to spent thousands to get out of a ticket of just a few hundred dollars.
It's tougher to stand on principle when it costs the equivalent of a couple/three weeks hard-earned wages.
When a Canada goose is killed and before it is carried by hand or transported in any manner, the hunter who killed the goose must validate their Canada Goose Hunting Permit. Validation is accomplished by slitting or punching out the mark indicating the date of kill. Failure to follow validation procedure makes the possession of the goose illegal and can result in enforcement action.
Smart move by the OP not to divulge his error. Lots of good folks here but also, way too many proud vultures here just waiting for someone they can pile on.