I really have a hard time believing that there are over 30% of the folks who have never forgotten a pen to sign their license with, allowed a hunting buddy to pick up and carry a downed bird for you, there are a TON of tiny little rules out there that are very easily broken by accident. Maybe a large % of that 30% just doesn't know the rules that they've broken yet?
In many places,you don't have to sign anything,just attach your tag to the animal.And in many places,you can legally pick up someone else's bird for him.Some locations have much more sensible regulations,and they are listed in the hunting guide in a way that most people can understand.As such,many people don't "accidentally" break the rules.