Because it walks more than it flies, its legs are more highly developed than those of other birds, and it can run away quickly when it meets up with an enemy. Nor has it entirely lost its ability to fly.
由於走路的機會比飛翔多，它們的腳也比生活在樹上、海洋、沼澤的鳥發達，遇到「壞人」，跑起來很快；飛翔的能力也未消失。