You are a knight from a village in the medieval ages. A wall to protect your hometown was just built and luckily it is resistant to arrows! Unfortunately the engineers of your town did not foresee the migrating birds as an issue, but they are much bigger than they were last year. It looks like just a few of them flying into the wall would send it tumbling down! Since you forgot your shield and birdseed at home, it looks like you'll have to slice and dice anything that could destroy the wall! And watch out! While the birds won't have much of an effect on you the arrows sure will.