A large,swift-running flightless bird(Struthio camelus) of Africa,characterized by a long bare neck,small head,and two-toed feet. It is the largest living bird.

• 鸵鸟非洲一种体形巨大、不会飞但奔跑迅捷的鸟（鸵鸟），特征为脖子长而无毛、头小、脚有两趾。是世界上存活着的最大的鸟。