2 km/h
ostrich
An Ostrich. A Kiwi is about the size of a chicken, and with a similar turn of speed.
Massive.
No! Neither can fly!
speed
Because they're wings are made for climbing. The body mass of the ostrich is too massive for its wing span and wing muscles.
The albatross has the biggest wingspan on (or above) the planet. The Royal albatross is 3.5 metres from wing tip to wing tip, and weighs 8 kilograms. The Antipodean or Wandering albatross is 3.2 metres from wing tip to wing tip.
The length of the wing, the weight of the wing, and the angles of the wing have impact. So do the speed thrown, wind speed, and temperature.
The wing structure of an ostrich is unique compared to other birds; it features long, broad wings that are not primarily used for flight. Instead, ostrich wings serve various functions, such as aiding in balance during running, providing stability during turns, and facilitating courtship displays. The wings are covered with feathers that are adapted for insulation and display rather than aerodynamic flight. Overall, ostrich wings reflect their adaptation to a terrestrial lifestyle rather than a flying one.
An ostrich is faster from a standing start; a horse is faster over distance.
The top speed of an ostrich is about 70 kilometers per hour (43 mph) while their sustained top speed is about 50 km/hr (31 mph).
The top speed of an ostrich is about 70 kilometers per hour (43 mph) while their sustained top speed is about 50 km/hr (31 mph).