0413 Let's call this the anti Arctic Tern stick.

The Arctic Tern is one of the most aggressive terns, defending its nest and young. It will attack humans and large predators coming too close to their nest. They usually strike the top or back of the head. Although it is too small to cause serious injury to big animals or humans, it is capable of repelling many raptorial birds, polar bears and smaller mammalian predators such as cats and foxes. As a human, you should keep a stick above your head, so the stick will be attacked.