Contents

09 February 2018
Vol 359, Issue 6376

About The Cover

Cover image expansion

COVER A violet-crowned woodnymph (Thalurania colombica colombica) maneuvers in flight. Hummingbirds are known for their ability to rapidly accelerate, decelerate, and turn on a dime. Species vary in aerial maneuvering performance, and different aspects of maneuverability evolve as a result of various biomechanical traits. This framework may apply to other organisms and to the design of more maneuverable aircraft. See pages 636 and 653.
Photo: Glenn Bartley/BIA/Minden Pictures