There was a door on campus that was locked, had signs up and was unusable for a good few years due to a goose that kept nesting right out side of it.

They are incredibly aggressive and I most people don't realize how much damage they can actually inflict.

Worst part is they are a protected species and hurting them even in self-defense could land you a hefty fine.

This and your Tim Horton's coffee getting cold instantly because its -40* are the key Canadian problems.