A Ostrich and A Roadrunner.

The ostrich cannot fly but runs at speeds of 44 mph (70 km/h)—the fastest running bird in the world. (The fastest running-flying bird is the roadrunner.) 

 

 

 In real life, the roadrunner looks a lot different, but it really is the world’s fastest running-flying bird. (The ostrich is the fastest non-flying bird.)