Struthioniformes is an order of flightless birds that includes species like the ostrich, emu, and cassowary. These birds are characterized by their long legs, large bodies, and small wings, which make them well-adapted for running rather than flying. They are primarily found in Africa, Australia, and New Guinea. Members of the Struthioniformes order are known for their strong legs, allowing them to reach high speeds while running. They typically inhabit open grasslands and forests, where they forage for seeds, fruits, and insects. Their unique adaptations and behaviors make them fascinating subjects of study in the avian world.