The classic question.
Rules: This is a fight in an arena, you are unarmed, you cannot leave the arena until every other animal is dead, and while the animals are as intelligent as normal they do understand that they’re fighting you and will try to do so, they won’t just run away.
i would rather fight just about anything than 1200-2000 lb bird. there's no chance at "winning". and you know you'd get swallowed mostly whole and then get mashed up in the darkness of their gizzard.
that's just not how i am gonna go out. if i saw a bird that big, i'm taking a header off a building.